cryptfs_hw: Add support for wipe_key routine

Add support for wipe_key routine to clean key.

Change-Id: I9e258e1506d0634c4fc5b5142475005f6eb51c4e
common: update enum value for disabling PC

Update enum value used to disable PC via PerfLock

Change-Id: I14cb3292b94db90d592905fb344c942e7d61c4f8
common: update enum value for sched perflocks

Update enum value for changing migrate cost and
prefer idle via perflock.

Change-Id: I66854af0d63647619c98cad89515b503a10cd02d
Merge remote-tracking branch 'CyanogenMod/cm-12.0' into HEAD