LTS Refresh: Merge release-R121-cos-6.6 up to e19631f98424

BUG=b/565063015
TEST=presubmit
RELEASE_NOTE=LTS Refresh from main-R121-cos-6.6 to release-R121-cos-6.6

cos-patch: lts-refresh
Change-Id: Ie4c80747034328ca0a96efcdd9aa13faa63fbd22
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/212446
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Derek Taylor <ddtaylor@google.com>
Reviewed-by: Miri Amarilio <mirilio@google.com>