sof-hda-dsp: Add speaker led support

alsa-project/alsa-ucm-conf pull request #286 was opened from Kobatw:

There's a speaker led on Dell G16 and use sof-hda-dsp to control.

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/286 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/286.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf