am 2b42ab4f: (-s ours) am 25349019: (-s ours) hammerhead: update prebuilt kernel

* commit '2b42ab4fcb5e9238fd0bba4094e45b3859b91b8d':
tree: b74aa191ac219c45a56f93a9e56a4d76bd396e4f
  1. zImage-dtb