[autotest] audio_AudioBasicHDMI: use TestFail instead of TestError

BUG=None
TEST=run audio_AudioBasicHDMI test

Change-Id: I759f9f9485fea15f9e84a13f8fdb0bf0b2f5e106
Reviewed-on: https://chromium-review.googlesource.com/298770
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
1 file changed