am 51cf2e5f: (-s ours) hammerhead: update prebuilt kernel automerge: 89d522b

* commit '51cf2e5ff81631e418e5694ddc88e5b1583a7c34':
  hammerhead: update prebuilt kernel
tree: b74aa191ac219c45a56f93a9e56a4d76bd396e4f
  1. zImage-dtb