UCM fails if driver built into kernel

alsa-project/alsa-ucm-conf issue #52 was opened from caseorum:

Since `class/sound/card${CardNumber}/device/driver/module` does not exist if the module is built-in, `${sys:$KernelModulePath}` is left undefined. This is caused by b3531451db3b4ac6aa8c6a8bec3992bcf30fffe4. The fallback suggested in alsa-project/alsa-lib#79 works for at least my bdw-rt5677. Is there a more general solution here? Maybe `.../device/modalias`?

Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/52 Repository URL: https://github.com/alsa-project/alsa-ucm-conf