MetaData: add HSR Key(vivek mehta)
- add kKeyHSR for high speed recording
mm-core: Add new mime for QTI FLAC container

Add new mime type for FLAC container which is sniffed by extended
extractor. This is needed for media extractor to determine which
parser to create.

Change-Id: Iad68dbee25bc1d482a2d73447912494a000fa674