audio: Audio resampler support for 192Khz playback

-Current AudioResampler limits input sampling rate to be
maximum of twice of output sampling rate to downsample.
The output sampling rate being 48khz, maximum input sampling
rate that be supported is 96khz.
Support is added to use qti resampler for playback upto 192khz.

Conflicts:
	media/libmedia/AudioTrack.cpp
	services/audioflinger/Threads.cpp

Change-Id: Ia8f24a0874ebf6e16ef7bd1f2759a14f47149875