[SRU][PATCH 0/1][B/aws, F/aws] aws: properly support instance types with > 255 cpu cores

[Andrea Righi]

BugLink: https://bugs.launchpad.net/bugs/1913739

[Impact]

To properly support instance types in AWS with > 255 cores we need to
make sure that commit c40aaaac1018ff1382f2d35df5129a6bcea3df6b
("iommu/vt-d: Gracefully handle DMAR units with no supported address widths")
is applied across all our linux-aws kernels.

[Test Case]

Tests performed by AWS.

[Fix]

Apply/backport commit c40aaaac1018ff1382f2d35df5129a6bcea3df6b.

[Regression potential]

The fix is affecting only intel IOMMU and it is an upstream fix, so the
regression potential should be minimal.