bullhead: update kernel prebuilt[ DO NOT MERGE ] am: ae7bd79a1d  -s ours am: 187bf8cf5e
am: b79a02e8e9

Change-Id: I3c3a659dac76602b8440ae8d751cd47a39c95c73
tree: f8ff6a026325ba8d5078912b012b6460f91a8292
  1. Image.gz-dtb