hammerhead: add f2fs support

Change-Id: I547db7883e8055af5a6d41179b09014f38e09ba3
Signed-off-by: Dan Trifan <jimsth@gmail.com>
hammerhead: Use QCOM PowerHAL

Change-Id: Ia40f84d2eb511dd1c7c0521706422ddf68e51342
derp

Change-Id: I757194d1de195411456cc8b02b64f308e31b04db
Merge remote-tracking branch 'AICP/kitkat' into HEAD