bullhead: update prebuilt kernel [ DO NOT MERGE ] am: dc66ef5645  -s ours
am: 4584c0628f

Change-Id: I0f26811b628ec539cc1edbacc6f7ee902c9cbae7
tree: 3440299988fed57705a360a407a9b7fdc1376801
  1. Image.gz-dtb