mm-core: Add kKeySmoothStreaming

Change-Id: I93036781cab1d81d8e22a626d61348b71203380b

Conflicts:
	mm-core/inc/QCMetaData.h
mm-core: Add key for HFR encoding

Change-Id: I0aa6978eaad25418260114fdad94d3294a0205c7

Conflicts:
	mm-core/inc/QCMetaData.h
mm-core: Add hevc coding type in mm-core

This change adds the hevc coding type to mm-core.

Change-Id: Icb2a91805061d149d5fcc160928cdec8ca0e5647
mm-core: Add support for Smooth streaming for secure mode playback.

   - This change will add the extension index required for
   - Smooth Streaming for both secure and non secure mode video playback.

Change-Id: I351b5c68702fc2dd83d50801b9bee7f8744c31b6
CRs-Fixed: 451786

Conflicts:
	mm-core/inc/OMX_QCOMExtns.h
QCMetadata: add keys for FLAC meta data

Add FLAC meta data specific keys.

Change-Id: I85f34d01ad4b403e236a5fc2ebf054eb383abbde

Conflicts:
	mm-core/inc/QCMetaData.h