ASUS VivoBook Pro 14: platform::micmute led not working

alsa-project/alsa-ucm-conf issue #400 was opened from Dinolek:

There is `/sys/class/leds/platform::micmute` from `asus-nb-wmi`, but `snd_ctl_led` isn't loaded. Microphone isn't connected to acp, so `snd_rn_pci_acp3x` isn't getting loaded.

I can get led switching working if I attach 'Capture Switch'

``` modprobe snd_ctl_led echo 'Capture Switch' > /sys/class/sound/ctl-led/mic/card1/attach ```

[alsa-info](http://alsa-project.org/db/?f=05aff573aedf6ddd6954ca739d8de8f827a78e86)

Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/400 Repository URL: https://github.com/alsa-project/alsa-ucm-conf