sof-hda-dsp: microphone device named "Headphones2"

alsa-project/alsa-ucm-conf issue #19 was opened from tanuk:

I was looking at the sof-hda-dsp UCM config, and I noticed that it defines a device named "Headphones2" which seems to actually represent a microphone.

Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/19 Repository URL: https://github.com/alsa-project/alsa-ucm-conf