msm8960: add qcom keystore engine

Change-Id: I609dd5a84f02aa5f9bb10b1bd95fb340609f6e6a
Fix jactivelte CameraWrapper crash

- jactive camera doesn't seem to have KEY_RECORDING_HINT, at least
  initially. Added check that the vaue read wasn't null

Change-Id: Ie970e5705df3d5d3065c27322007d2530ea63d6f
cmhw: add DisplayColorCalibration tunables

Change-Id: Ifb49365d95507f886a70e96c72697b5a5618c073