am 0ca2f575: (-s ours) am ef0021c9: (-s ours) hammerhead: update prebuilt kernel

* commit '0ca2f57596313db1fbafc96b8a776b04f4dd0409':
tree: b74aa191ac219c45a56f93a9e56a4d76bd396e4f
  1. zImage-dtb