LTS Refresh: Merge release-R125-cos-6.12 up to 868e478d3db3

BUG=b/504751393
TEST=presubmit
RELEASE_NOTE=LTS Refresh from main-R125-cos-6.12 to release-R125-cos-6.12

cos-patch: lts-refresh
Change-Id: I5cc15251c2b65c5e25ed83647b87ab04fb57701e
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/149604
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Derek Taylor <ddtaylor@google.com>