Update kernel to builds 8721220 am: 28fa3c89cc

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/common-modules/virtual-device/5.15/x86-64/+/2125081

Change-Id: Ia940e2fda60d6269a29e94db9d08a84e6eb1cef3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>