am 81cbebab: (-s ours) hammerhead: Update prebuilt kernel

* commit '81cbebabe1592a73160fe9a9fc5da2a373b9a472':
  hammerhead: Update prebuilt kernel
tree: a10d09219f52cb6f4a49b6d5a83d600e399e7d27
  1. zImage-dtb