bullhead: update kernel prebuilt[ DO NOT MERGE ] am: 239e894a10  -s ours
am: a674f05b8c

Change-Id: I689a5767d91c9fb292c112679c67babd640e67bc
tree: b83005b4ab5577a5b383f9649c24ef8ec28325fb
  1. Image.gz-dtb