Replace common/direct.conf included file with DirectUseCase macro (directm.conf)

alsa-project/alsa-ucm-conf pull request #680 was opened from perexg:

There is a requirement to have more direct profiles with different channel counts (e.g. for Scarlett 18i20).

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/680 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/680.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf