Fix a bug that speaker unmute when testing crosstalk

BUG=None
TEST=None

Change-Id: I869a0608f0f503d85db0d6f5280c03c66e8bbdd3
Reviewed-on: https://gerrit.chromium.org/gerrit/33484
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
1 file changed