conf: USB - add "Cmedia Audio" to USB-Audio.pcm.iec958_device

[GitHub pull_request - opened]

alsa-project/alsa-lib pull request #122 was opened from jason77-wang:

Otherwise, there will be a "Digital Output(S/PDIF)-Cmedia Audio" from
Gnome UI, but there is no this physical interface on the card.

Signed-off-by: Hui Wang <hui.wang at canonical.com>

Request URL   : https://github.com/alsa-project/alsa-lib/pull/122
Patch URL     : https://github.com/alsa-project/alsa-lib/pull/122.patch
Repository URL: https://github.com/alsa-project/alsa-lib