bullhead: update prebuilt kernel [ DO NOT MERGE ] am: 07c7fcd44f  -s ours
am: dbe6220d42

Change-Id: I9a3a173642c581680d12d28485ccbb24507a41df
tree: 6a1c9a692bc56957bd6b5f0c717d0b3945ba0c86
  1. Image.gz-dtb