Revert "hammerhead: update prebuilt kernel [DO NOT MERGE]" am: 2ad63c3f92  -s ours am: 169fac909e am: c48afbb468
am: 96a31c7a89

* commit '96a31c7a89d5a611a8478fbecd98656d9fa964dc':
  Revert "hammerhead: update prebuilt kernel [DO NOT MERGE]"
tree: f0cd38b301d484d703b61094540fb09640bc2c43
  1. zImage-dtb