[linux-yocto] v4.12.x - stable updates comprising v4.12.15

[Paul Gortmaker]

Bruce, Yocto kernel folks:

Here is the 1st 4.12.x stable update.  Continuing on top of the final
Greg KH released v4.12.14 kernel, we now have the appropriate content
from 4.13.4 --> 4.13.5 (inclusive) applied on top of the GregKH
baseline. 

Since the last 4.12 release was done at the same time as 4.13.3, that is
why auditing of 4.13.4+ content for appropriate 4.12.x commits was
chosen as a starting point.  These combined 4.13.x releases result in
just about 185 backported commits to the 4.12.x baseline we wish to
extend maintenance on.

As usual, I've put this 4.12.x queue through the various testing that I
figured made sense, which includes but is not limited to:

-x86-64 sanity boot test + workloads of defconfig on COTS Core2 box.
-build MIPS, PPC, ARM, ARM64 with defconfig
-build x86-64 allmodconfig/allyesconfig
-build i386 allmodconfig/allyesconfig

I bumped the 4.12 Makefile and did the signed tag just as per the previously
released 4.8.x versions for the older release.

Please find a signed v4.12.15 tag using this key:

http://pgp.mit.edu/pks/lookup?op=vindex&search=0xEBCE84042C07D1D6

in the repo in my kernel.org directory here:

   https://git.kernel.org/cgit/linux/kernel/git/paulg/linux-4.12.y.git/
   git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux-4.12.y.git

for merge to standard/base in linux-yocto-4.12 and then out from there
into the other base and BSP branches.

For those who are interested, the evolution of the commits is here:

   https://git.kernel.org/cgit/linux/kernel/git/paulg/longterm-queue-4.12.git/

This repo isn't needed for anything; it just exists for transparency and
so people can see how the commits were adjusted to apply to the 4.12.x
kernel baseline in case people are interested.

Paul.
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