USB-Audio: Add support for PreSonus Revelator io24

alsa-project/alsa-ucm-conf pull request #636 was opened from 0PandaDEV:

These mappings are based on the ones from the revelator io44 and adjusted to work with both microphone channels, since the io24 has 2.

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/636 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/636.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf