Merge "Revert "Revert "hammerhead: update prebuilt kernel [DO NOT MERGE]""" into mnc-dev am: 66c639eff4  -s ours am: a4659a0918 am: 426fc81918
am: 36cd8bb3e7

* commit '36cd8bb3e7290e292f826bdc8ca976a554a6803f':
  Revert "Revert "hammerhead: update prebuilt kernel [DO NOT MERGE]""