alsa_conformance_test.py: Update parameters

Use "alsa_conformance_test.py (-P|-C) device_name" instead of
"alsa_conformance_test.py device_name (PLAYBACK|CAPTURE)" to make it
have the same behavior as alsa_conformance_test.

BUG=b:143926451
TEST=alsa_conformance_test.py -P hw:0,0

Cq-Depend:chromium:1911859
Change-Id: I8b186ef4a1482e635852257d26e8b2e3a3272acb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/audiotest/+/1911841
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>
2 files changed