libmedia: implement samsungs isSeparatedStream, built audioparameter

Change-Id: I96ec5b79c08e37c9bca59470addb5a9f7869eaea
Make an exception for MR0_AUDIO_BLOB in loadHwModule_l

Without this exception samsung JB stock audio HAL crashes

Change-Id: I596e6e077f5bd4236359de48db754100e0a133e4