LTS Refresh: Merge release-R121-cos-6.6 up to dd345ab82841 BUG=b/529917915 TEST=presubmit RELEASE_NOTE=LTS Refresh from main-R121-cos-6.6 to release-R121-cos-6.6 cos-patch: lts-refresh Change-Id: I0488a3493bfdd83ec6404a3079047629d26bdcc3 Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/166267 Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com> Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>