am 6ad9f720: (-s ours) am 683328a9: (-s ours) hammerhead: update prebuilt kernel

* commit '6ad9f72069c8f148c9041ca4bc4e5d4bc828c691':
tree: b74aa191ac219c45a56f93a9e56a4d76bd396e4f
  1. zImage-dtb