Process video decode hints and display-off hints in the power HAL. Also move to using the perflock API to request system-level parameter changes. Change-Id: I42e33d6d22016b02d85572a69fee64aadf36da58
Add performance header file that includes opcodes required to use PerfLock. Change-Id: I2b26673499f8427e8db40baf6784b85baddbe869