USB-Audio: GoXLR - fix the channel detection for mini, cleanups

alsa-project/alsa-ucm-conf pull request #521 was opened from perexg:

Note that detection for 25 channels requires commit [1] (alsa-lib 1.2.14+).

[1] https://github.com/alsa-project/alsa-lib/commit/7fbd47ce797939862025ef424865...

BugLink: https://github.com/alsa-project/alsa-ucm-conf/issues/444

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/521 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/521.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf