conf: USB-Audio: Add C-Media USB Headphone Set to the IEC958 blacklist

alsa-project/alsa-lib pull request #36 was opened from tanuk:

Fixes: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/317

Signed-off-by: Tanu Kaskinen tanuk@iki.fi

Request URL : https://github.com/alsa-project/alsa-lib/pull/36 Patch URL : https://github.com/alsa-project/alsa-lib/pull/36.patch Repository URL: https://github.com/alsa-project/alsa-lib