Add OMX_AUDIO_CodingAPE and OMX_AUDIO_CodingDTS

Copied from the stagefright-plugins project.

add HEVC decoder and cleanup

Change-Id: I16342228014320161a22302a3c14df7725556cd2
SF: Reduce size of DisplayFrame according to "transparent region"

Calculating SourceCrop according to "transparent region" is taken care but
not DisplayFrame. DisplayFrame also need to be calculated according to
"transparent region" to avoid mismatch in SourceCrop and DisplayFrame.
This will avoid unwanted Scaling introduced because of mismatch.

CRs-Fixed: 651365
Change-Id: I33733c084702d46de1c9eb6663533fb083f9788a