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

* commit '169fac909ec01042044a505bca6ecf853514ae40':
  Revert "hammerhead: update prebuilt kernel [DO NOT MERGE]"
tree: f0cd38b301d484d703b61094540fb09640bc2c43
  1. zImage-dtb