bdw-rt5677: add SOF support

[GitHub pull_request - edited]

alsa-project/alsa-ucm-conf pull request #53 was edited from caseorum:

I believe this is the "mechanism" intended in 898602208888da63d758ff3c293b5ad2ec6e6c19.

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/53
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/53.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf