Update kernel to builds 9618665 am: 4889e7b0bf am: af78b87643 am: d636185985 am: d815bb97e2

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/6.1/x86-64/+/2442942

Change-Id: I9bd7940cdc8c86d3ea89ba6a31c048fb8ccc1477
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>