[linux-yocto] v4.18.x - stable updates comprising v4.18.43

[Paul Gortmaker]

Bruce, Yocto kernel folks:

Here is the next 4.18.x stable update "extension" primarily created
for the Yocto project, continuing from the previous v4.18.42 release.

There are about 125 commits here, based on the commits that were used
in the 4.19.[48/49/50] linux-stable releases.

A note to distro builders - normally there are no new Kconfig options
in stable, but here there is a new "NOUVEAU_LEGACY_CTX_SUPPORT" option.
The upstream decided that the easiest solution to avoid potential
security issues with the legacy code was to provide a way for distro
builders to opt out.  But it remains enabled by default so as to not
break any exising users who rely on it.

I suspect I'll have time to do one more final 4.18 stable backport
release.  Hopefully with the EOL messaging being in the last few
releases, this is no surprise to anyone, and people have their own
maintenance or migration plans in place and rolled out.

I've put this 4.18.x queue through the usual testing; build testing
on x86-64/32, ARM-64/32, PPC and MIPS, plus some static analysis
and finally some sanity runtime tests on x86-64.

I did the signed tag just as per the previously released versions.
Please find a signed v4.18.43 tag using this key:

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

in the repo in the kernel.org directory here:

  https://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux-4.18.y.git/?h=linux-4.18.y
  git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux-4.18.y.git

for merge to standard/base in linux-yocto-4.18 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-4.18.git/

This repo isn't needed for anything; it just exists for transparency and
so people can see the evolution of the raw commits that were originally
selected to create this 4.18.x release.

Paul.