* Unconditionally turn on SIOCGI2C probing for all interfaces
    on "ifconfig -v". I've seen no measurable timing difference
    for doing additional SIOCGI2C call for system with 4k vlans.
* Determine appropriate handler (SFP/QSFP) by reading identification
    byte (which is the same for both SFF-8472 and SFF-8436) instead
   of checking driver name.

MFC with:	r270064
Sponsored by:	Yandex LLC
Add new quirk.

PR:		193279
MFC after:	1 week
Fix spelling.

PR:		193279
MFC after:	1 week
MFV:  Only emit movw on ARMv6T2

Building for the FreeBSD default target ARMv6 was emitting movw ASM on certain
test cases (found building qmake4/5 for ARM).  Don't do that, moreover, the AS
in base doesn't understand this instruction for this target.  One would need
to use --integrated-as to get this to build if desired.

http://llvm.org/viewvc/llvm-project?view=revision&revision=216989

Submitted by:	ian
Reviewed by:	dim
Obtained from:	llvm.org
MFC after:	2 days
Fix descriptors leak in case of nvlist_xunpack() failure.

Submitted by:	Mariusz Zaborski <oshogbo@FreeBSD.org>
Declare i.

Reported by:	sbruno
Use better type for i.
Do not direct commit to contrib/llvm.  Make the change a patch file instead.
Reverts 271025 but still functionally patches it.  Original intent is still
the same.  Pointed out by rdivacky.

MFV:  Only emit movw on ARMv6T2

Building for the FreeBSD default target ARMv6 was emitting movw ASM on certain
test cases (found building qmake4/5 for ARM).  Don't do that, moreover, the AS
in base doesn't understand this instruction for this target.  One would need
to use --integrated-as to get this to build if desired.

http://llvm.org/viewvc/llvm-project?view=revision&revision=216989

Submitted by:	ian
Reviewed by:	dim
Obtained from:	llvm.org
MFC after:	2 days
Relnotes:	yes
Apparently, the patch commited in svn r271029 doesn't actually do anyting,
so we still need to modify the code in place. Pointed out by emaste.

MFC after:	2 days
Relnotes:	yes
Merge remote-tracking branch 'freebsd/master' into hardened/current/segvguard