bullhead: update kernel prebuilt[ DO NOT MERGE ] am: ae7bd79a1d  -s ours
am: 187bf8cf5e

Change-Id: I1fb4640534e96eff2bb5fa10d8b5675bf9f3eee1
tree: f8ff6a026325ba8d5078912b012b6460f91a8292
  1. Image.gz-dtb