factory_AudioLoop: Add duration parameter for audiofuntest. Make mute
settings configurable through arguments.

BUG=none
TEST=manually test on my DUT

Change-Id: I34c78af65b2e96e62bf97afad43d3d1db68f29af
Reviewed-on: https://gerrit.chromium.org/gerrit/34605
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Tested-by: Ricky Liang <jcliang@chromium.org>
Commit-Ready: Ricky Liang <jcliang@chromium.org>
1 file changed