hammerhead: update prebuilt kernel [DO NOT MERGE] automerge: a88af8936e  -s ours automerge: c8557e769a  -s ours automerge: 34782e7685  -s ours automerge: 498c3bd48a  -s ours
automerge: b5d4930d59  -s ours

* commit 'b5d4930d59ee1d2b178a240b017876cce0a6b636':
  hammerhead: update prebuilt kernel [DO NOT MERGE]
tree: 3428957eeddb56cf1d7089f98f0b46456fb61765
  1. zImage-dtb