am a86d2bb4: (-s ours) hammerhead: update prebuilt kernel automerge: 1b915d9

* commit 'a86d2bb44e5db3b8e0c1838d1f631a65302a5956':
  hammerhead: update prebuilt kernel
tree: b74aa191ac219c45a56f93a9e56a4d76bd396e4f
  1. zImage-dtb