Use a more professional device description.
Move sys/arm/econa to sys/arm/cavium/cns11xx.
Merge from projects/pf r264198:
Execute pf_overload_task() in vnet context. Fixes a vnet kernel panic.

Reviewed by:	trociny
MFC after:	1 week
Add some assertions to ensure that the target array doesn't get accessed
out of bounds.

Obtained from:	Netflix, Inc.
MFC after:	3 days
These were bogusly placed in the arm directory. Move them to their
proper location in powerpc directory.
Implement kqueue(2) for procdesc(4).

kqueue(2) already supports EVFILT_PROC. Add an EVFILT_PROCDESC that
behaves the same, but operates on a procdesc(4) instead. Only implement
NOTE_EXIT for now. The nice thing about NOTE_EXIT is that it also
returns the exit status of the process, meaning that we can now obtain
this value, even if pdwait4(2) is still unimplemented.

Notes:

- Simply reuse EVFILT_NETDEV for EVFILT_PROCDESC. As both of these will
  be used on totally different descriptor types, this should not clash.

- Let procdesc_kqops_event() reuse the same structure as filt_proc().
  The only difference is that procdesc_kqops_event() should also be able
  to deal with the case where the process was already terminated after
  registration. Simply test this when hint == 0.

- Fix some style(9) issues in filt_proc() to keep it consistent with the
  newly added procdesc_kqops_event().

- Save the exit status of the process in pd->pd_xstat, as we cannot pick
  up the proctree_lock from within procdesc_kqops_event().

Discussed on:	arch@
Reviewed by:	kib@
Fix table alignment. EVFILT_PROCDESC is longer than the existing filters.
Implement the final missing sysctls by moving ipf_auth_softc_t from
ip_auth.c to ip_auth.h. ip_frag_soft_t moves from ip_frag.c to
ip_frag.h. mlfk_ipl.c creates sysctl MIBs that reference control blocks
that are dynamically created when IP Filter is loaded. This necessitated
creating them on-the-fly rather than statically at compile time.

Approved by:	glebius (mentor)
IFp4 @1192291:

- Don't include sys/caprights.h, leverage the fact that cap_rights_t
  is also defined in sys/types.h.
- Include sys/types.h directly.
- For systems that do not have cap_rights_t, define it, so we can use
  it in au_to_rights() prototype.

Discussed with:	rwatson
Clean up shutdown_nice(). Just send the right signal to init(8).

Right now, init(8) cannot distinguish between an ACPI power button press
or a Ctrl+Alt+Del sequence on the keyboard. This is because
shutdown_nice() sends SIGINT to init(8) unconditionally, but later
modifies the arguments to reboot(2) to force a certain behaviour.

Instead of doing this, patch up the code to just forward the appropriate
signal to userspace. SIGUSR1 and SIGUSR2 can already be used to halt the
system.

While there, move waittime to the function where it's used; kern_reboot().
For GNU as, add two missing modes for each of the fcomip and fucomip
instructions.  Partially obtained from OpenBSD by Pedro Giffuni, while I
added the fcomip variants.

Apparently this should help with compiling certain variants of WebKit.

MFC after:	3 days
Need to test .MAKE.LEVEL everywhere before using it for bootstrapping
issues between fmake and bmake.
Thinko: don't forget to apply 'howto' in case init(8) isn't running.
Call sctp_addr_change() from rt_addrmsg() instead of rt_newaddrmsg_fib(),
since rt_addrmsg() gets also called from other functions.

MFC after: 3 days
Do not fill screen, while muted.

Sponsored by:	The FreeBSD Foundation
Loosen the processing of *_IF_aliasN vars to be less strict. Previously,
the first alias had to be _alias0 and processing stopped at the first non-
defined variable (preventing gaps). Allowing gaps gives the administrator
the ability to group aliases in an adhoc manner and also lifts the
requirement to renumber aliases simply to comment-out an existing one.
Aliases are processed in numerical ascending order.

Discussed on:	-rc
MFC after:	1 week
Fix panic on load new driver while vt(4) is in VGA textmode.
o Mute terminal while vt(4) driver change in progress.
o Reset VDF_TEXTMODE before init new driver.
o Assign default font, if new driver is not in TEXTMODE.
o Do not update screen while driver changing.

Resolved by:	adrian
Reported by:	tyler
MFC after:	7 days
Sponsored by:	The FreeBSD Foundation
Remove a bogus re-assignment.
Add a basic set of data points which count the number of sleep entries
that are being done by the OS.

For now this'll match up with the "wakeups"; although I'll dig deeper into
this to see if we can determine which sleep state the CPU managed to get
into.  Most things I've seen these days only expose up to C2 or C3 via
ACPI even though the CPU goes all the way down to C6 or C7.
Updates to i.MX53:

* Define support for the SDHCI driver, although it doesn't work yet
* Fix the memory mappings for IPU [1]

Reviewed by:	ray [1]