Configure the analog input 7 which, on BBB, is connected to the 3V3B rail
through a voltage divisor (R163 and R164 on page 4 of BBB schematic).

Add a note about this on ti_adc(4) man page.  The ti_adc(4) man page will
first appear on 10.1-RELEASE.

MFC after:	1 week
Suggested by:	Sulev-Madis Silber (ketas)
Manual page reviewed by:	brueffer (D127)
Never, ever, abbreviate the month names on manual pages.

Pointed out by:	brueffer
Pointy hat to:	loos
Document some more socket features

Add some mention of the functions used by protocol implementations,
upcalls, and other general routines.

Not all functionality is documented; in particular:
o the *at() variants, which are useful only for implementing the
  corresponding syscalls.
o soconnect2(), also only used to implement a syscall (socketpair()).
o sockargs(), which is essentually unused and only tangentially
  socket-related.
o selsocket(), which is commented as being present solely for use by
  netncp and netsmb.
o getsockaddr(), which is just a convenience shortcut for copyin().

Reviewed by:	jhb (previous version)
Approved by:	hrs (mentor)
Note that recording is not supported for snd_envy24*

PR:		docs/166755
Approved by:	hrs (mentor)
enable sound modules on arm..  This is necessary to get the uaudio
module installed...
Change type of the DMA address so that on PAE platforms we get can
64-bit DMA addresses even though the USB stack currently only uses
32-bit DMA.

Suggested by:	Kohji Okuno <okuno.kohji@jp.panasonic.com>
- Return NULL and set errno to EINVAL if size is 0 (as required by POSIX).
Update the manpage to reflect this change.
- Always set the current position to the first null-byte when opening in append
mode. This makes the implementation compatible with glibc's. Update the test
suite.

Reported by:	pho
Approved by:	cognet
Document the diskid automatic label class.
While there, also document the glabel "native" labels and explain why
there are additional nodes created for nested GEOM classes.

Reminded by:	jmg
Introduce a procedural interface to the ifnet structure.  The new
interface allows the ifnet structure to be defined as an opaque
type in NIC drivers.  This then allows the ifnet structure to be
changed without a need to change or recompile NIC drivers.

Put differently, NIC drivers can be written and compiled once and
be used with different network stack implementations, provided of
course that those network stack implementations have an API and
ABI compatible interface.

This commit introduces the 'if_t' type to replace 'struct ifnet *'
as the type of a network interface. The 'if_t' type is defined as
'void *' to enable the compiler to perform type conversion to
'struct ifnet *' and vice versa where needed and without warnings.
The functions that implement the API are the only functions that
need to have an explicit cast.

The MII code has been converted to use the driver API to avoid
unnecessary code churn. Code churn comes from having to work with
both converted and unconverted drivers in correlation with having
callback functions that take an interface. By converting the MII
code first, the callback functions can be defined so that the
compiler will perform the typecasts automatically.

As soon as all drivers have been converted, the if_t type can be
redefined as needed and the API functions can be fix to not need
an explicit cast.

The immediate benefactors of this change are:
1.  Juniper Networks - The network stack implementation in Junos
    is entirely different from FreeBSD's one and this change
    allows Juniper to build "stock" NIC drivers that can be used
    in combination with both the FreeBSD and Junos stacks.
2.  FreeBSD - This change opens the door towards changing ifnet
    and implementing new features and optimizations in the network
    stack without it requiring a change in the many NIC drivers
    FreeBSD has.

Submitted by:	Anuranjan Shukla <anshukla@juniper.net>
Reviewed by:	glebius@
Obtained from:	Juniper Networks, Inc.
Add convert_drvapi.sh; a script that helps to convert NIC drivers
to use the procedural interface.

Submitted by:	Sreekanth Rupavatharam <rupavath@juniper.net>
Reviewed by:	glebius@
Obtained from:	Juniper Networks, Inc.
Remove extraneous "mkdir -p"

The directory hierarchy is created by an mtree file (BSD.usr.dist,
in the case of calendar(1)).  An explicit "mkdir -p" in a program's
Makefile is redundant, and can mask a missing mtree entry.
Convert fxp(4) to use the driver API.

Submitted by:	Anuranjan Shukla <anshukla@juniper.net>
Obtained from:	Juniper Networks, Inc.
Convert em(4) to use the driver API.

Submitted by:   Anuranjan Shukla <anshukla@juniper.net>
Obtained from:  Juniper Networks, Inc.
Convert bxe(4) to use the driver API.

Submitted by:   Sreekanth Rupavatharam <rupavath@juniper.net>
Obtained from:  Juniper Networks, Inc.
Overhaul CAM SG driver IOCTL interfaces.

Make it really work for native FreeBSD programs.  Before this it was broken
for years due to different number of pointer dereferences in Linux and
FreeBSD IOCTL paths, permanently returning errors to FreeBSD programs.
This change breaks the driver FreeBSD IOCTL ABI, making it more strict,
but since it was not working any way -- who bother.

Add shims for 32-bit programs on 64-bit host, translating the argument
of the SG_IO IOCTL for both FreeBSD and Linux ABIs.

With this change I was able to run 32-bit Linux sg3_utils tools and simple
32 and 64-bit FreeBSD test tools on both 32 and 64-bit FreeBSD systems.

MFC after:	1 month
Add missing Ivy Bridge and Haswell events.

Submitted by: Anton Rang <rang@mac.com>
MFC: 2 weeks
add Xref to sound(4)...

MFC after:	1 week
handle longer commands so that lines don't overflow...  people who added
commands forgot to check this...
Fix build UDP-Lite with VIMAGE enabled when building with gcc.

Reported and tested by: Jason Hellenthal
Fix few outdated names of defines:

o NR_REG_SW_NIC -> NR_REG_SW
o NR_RING_NIC_SW -> NR_REG_NIC_SW
o NETMAP_NO_TX_SYNC -> NETMAP_NO_TX_POLL
o NETMAP_DO_RX_SYNC -> NETMAP_DO_RX_POLL

I hope dear luigi has not left those as an excercise to careful
reader, in which case I apologize in advance for ruining his play.

MFC after:     1 week