[automerger skipped] Update kernel to builds 8840540 am: fea28e5804 -s ours am: 7cff04c18a -s ours

am skip reason: Merged-In Icf12e218380ec87154a33d9134b5de5f25c2e8f0 with SHA-1 d50c1d3183 is already in history

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/common-modules/virtual-device/5.15/arm64/+/2223698

Change-Id: I975c8c201f2b66215a72b0751acb11b87cebf8f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>