mm-video: vdec: Allow devices to disable adaptive playback

* Older Adreno drivers have problems with adaptive playback due to
  incompatibility inside the library.
* Allow devices to choose to not advertise adaptive playback capability
  if bad output results.

Change-Id: Ie68fb9f8ec2122f2fc6e6654d9fdbc773dff509a
Merge remote-tracking branch 'cyan/cm-12.0-caf-8960' into cm-12.0-caf-8660