[automerger skipped] Update kernel to builds 7855344 am: f284103900 -s ours am: b2d68b4ac4 -s ours am: 2f57c4cd4f -s ours

am skip reason: Merged-In Id5bd5e1efd7fa75806a18936ca5dbda97bffd11a with SHA-1 9ad3d4fe22 is already in history

Original change: https://android-review.googlesource.com/c/device/google/cuttlefish_prebuilts/+/1890107

Change-Id: I662d9447ee0a080845ce7da072b0ad9626971f79