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

Change-Id: Ib8f0cf60663f7c1c2c31327f130b739bc99fb59e
tree: a4b12606105d541035b5154e7b57f5af69299645
  1. Image.gz-dtb