LTS Refresh: Merge release-R129-cos-6.12 up to a6d7229981ce

BUG=b/529917915
TEST=presubmit
RELEASE_NOTE=LTS Refresh from main-R129-cos-6.12 to release-R129-cos-6.12

cos-patch: lts-refresh
Change-Id: I23ca30badd5542adf3bf5b4ac593e229dd5848d8
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/166269
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>