hammerhead: Add LRX21O apks, update mpdecision

apks are rebuilt, mpdec taken from OPPO 8974, November release.

Change-Id: I3910839a2e198fdef525145f56aa9f7b9a6b15ca
Merge pull request #51 from myfluxi/cm-12.0

hammerhead: Add LRX21O apks, update mpdecision