av: camera: Generic QCOM camera symbols

 * Several symbols declared Oppo specific are QCOM generic

Change-Id: I0a1b5742d8e4d08963cbd43e69c87609eef45b59
av: media: Add audio/qti-flac MIME type definition

Change-Id: Ie52fd6696cc5efa6aaff20ea56c43615467e2649