bullhead: update kernel prebuilt[ DO NOT MERGE ] am: b6708ca998  -s ours am: ae8a995f36
am: 68bcf3531d

Change-Id: Ided0530f675eea000a182f419d8df599225f0424
tree: a4b12606105d541035b5154e7b57f5af69299645
  1. Image.gz-dtb