Always update the hw.uart.console hint anytime a change is made to the
comconsole setup.  Previously the hint would be set when if you set a
custom port, but it would not be updated if you later set a custom speed.

Also, leave the hw.uart.console hint mutable so it can be overridden or
unset by the user if needed.

Reviewed by:	kib (earlier version)
MFC after:	1 week
Don't assume that all Linux TCP-level socket options are identical to
FreeBSD TCP-level socket options (only the first two are).  Instead,
using a mapping function and fail unsupported options as we do for other
socket option levels.

MFC after:	2 weeks
Revert the part of r239864 which removed obtaining the SMP mutex around
reading registers from other CPUs. As it turns out, the hardware doesn't
really like concurrent IPI'ing causing adverse effects. Also the thought
deadlock when using this spin lock here and the targeted CPU(s) are also
holding or in case of nested locks can't actually happen. This is due to
the fact that on sparc64, spinlock_enter() only raises the PIL but doesn't
disable interrupts completely. Thus direct cross calls as used for the
register reading (and all other MD IPI needs) still will be executed by
the targeted CPU(s) in that case.

MFC after:	3 days
Only try to install one link at each path.

Don't install verify_krb5_conf.8.  It is installed in
kerberos5/usr.bin/verify_krb5_conf.
manctl is conditionally added to SUBDIRS later on.  Don't unconditionally
include in the main list.
Remove several MLINKS that were listed twice.
For 57765 class controllers, set low watermark max receive frames to 1.
Import jemalloc 3.3.0.  This reduces zeroed memory validation overhead for
non-MALLOC_PRODUCTION builds.
Update list of ports required for importing jemalloc.
bge_attach() can fail before attaching mii(4). So make sure to check
bge_miibus before detaching mii(4).
 - Wrap long line;
 - Add -, to SYNOPSIS section.

MFC after:	2 weeks
Indicate a bunch of new hardware support.

PR:		docs/173893
Submitted by:	Mathieu Simon <mathieu.sim@gmail.com>
Approved by:	bcr (mentor)
- Move large functions m_getjcl() and m_get2() to kern/uipc_mbuf.c
- style(9) fixes to mbuf.h

Reviewed by:	bde
style(9)

Reviewed by:	bde
Disable MSI interrupts for SB600 chipset.  According to the report they are
not functional.

PR:		kern/174880, kern/174985, kern/175002
MFC after:	1 week
Fix timer to support oneshot and periodic mode
Use 64 bit high and low counter for timecounter and delay

Reviewed by: mav@, ian@
Approved by: gonzo@
Little-endian fix for PCI on Broadcom XLP.

Update the function xlp_pcib_hardware_swap_enable() to do nothing
when BYTE_ORDER is not BIG_ENDIAN. PCIe hardware swap is not requred
in little-endian mode as the endianness matches that of CPU.
- Utilize m_get2(), accidentially fixing some signedness bugs.
- Return EMSGSIZE in both cases if uio_resid is oversized or undersized.
- No need to clear rcvif.
Broadcom XLP updates for the new firmware

Support few more versions of board firmware.  In case the security
block is disabled, enable it at boot. Also increase the excluded
memory region to cover the area used by the firmware to initialize
devices.
Minor updates to the Broadcom XLP NAE driver

Remove unnecessary SGMII initialization code from nae.c. While there
clean up some prints and whitespace.