bullhead: update prebuilt kernel [ DO NOT MERGE ] am: e718a57acb
am: f1294ee7a0  -s ours

Change-Id: I9cbec0b4078daa2a69b326a3dc1f74675f0a6505
tree: 602854f3bbe7c7fcf98854072949f6303ccc5a53
  1. Image.gz-dtb