AudioFlinger: Use AudioResampler::SPEEX_QUALITY by default

The bad audio resampling in AudioFlinger ruins the audio quality of
all media that does not have 44.1kHz sample-rate. Most video files
have 48kHz sample-rate audio track and this change improves playback
audio quality of those files.

Downside of this change is increased MPU usage when playing audio with
something else than 44.1kHz sample-rate. On OMAP 4430 the over all
load increase in comparison to linear interpolation resampler is
around 1-1.5 MHz of a single ARM A9 core, when playing 48 kHz
sample-rate stereo wav file.

Cherry-pick from ICS.

Change-Id: I7a54c281279e74b8f9e8615056c4a193d6e0f203
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Daniel Levin <dendy@ti.com>

MW: Port to Lollipop, add OMAP_TUNA support.