Uprev kernel to 5.15.163 for real

Previous http://go/cos-review/77080 didn't actually update the commit hash of the kernel tree.

FIX=b/346578836,b/346814984

Change-Id: I8d305c9b41326e14a15e184f646e2029b45bfd18
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/77520
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Alan Berryhill <berryhill@google.com>
2 files changed