sof-broadwell-rt286: use symlinks to reuse existing UCM

[GitHub pull_request - opened]

alsa-project/alsa-ucm-conf pull request #18 was opened from plbossart:

There are no firmware-specific settings to it's fine to reuse the
legacy file as is.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/18
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/18.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf