DSPManager: Boeffla sound 1.6.6

Change-Id: Id8c51fe643ece1ad77ecb01de31041fc0a860aa1
DSPManager: ignore unsupported feature silently

Its not nice to throw an exception instead

Change-Id: Iba1dec454b8da9226287392b3657c3ab3e9cf7d7
Merge "DSPManager: Boeffla sound 1.6.6" into android-4.4
Merge remote-tracking branch 'omni/android-4.4' into omni