For HTC Devices: enable support for qtr framebuffering

Change-Id: I904f13854eba04d833b257645bb35b2f95b6fa79
surfaceflinger: Allow gpu to render widevine level3

Allow gpu to render widevine level3 but keep
blocking screen shots.

CRs-fixed: 428647,424769,421767

Change-Id: I914232a062acbb7b17901dbf2b414973230e59d9