bullhead: update prebuilt kernel [ DO NOT MERGE ] am: 6e837ef235
am: c109153691  -s ours

Change-Id: Ic6d2fb4cb1743d1f5a8653a4d179a09b42544213
tree: 863f3e74894f58516d052d7d2ffbc3cdb01f20c4
  1. Image.gz-dtb