Roland Bridgecast - add missing intermediate config file

alsa-project/alsa-ucm-conf pull request #354 was opened from smangels:

- closes #353 - tested on ArchLinux running UCM version 1.2.10

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/354 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/354.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf