bullhead: update kernel prebuilt[ DO NOT MERGE ] am: a27f46d788  -s ours am: 773bb10c4f
am: caf8b922b9

Change-Id: I33290e5922d214d63f66d85f503d9652f38c3168
tree: cccbe2f0dc8d0903c71cb1e8f3ea13c0d0fe7a29
  1. Image.gz-dtb