bullhead: update prebuilt kernel [ DO NOT MERGE ] am: dc66ef5645  -s ours am: 4584c0628f am: 4437813d1a am: 12d7742f56
am: 4d279ff70b  -s ours

Change-Id: I2f3ebc08bf1d2a70da5a4b5973cdb79c9e62e056
tree: 162c20fee0c1defd0af88f3078a9bc474a5a65dd
  1. Image.gz-dtb
  2. Image_treble.gz-dtb