device/pine64-pinephone: Install default alsa conf to /etc/alsa/conf.d/ file
- Restores ability to use dmix (and thus play multiple audio sources concurrently) in Sxmo.
- Note, installing to /etc/asound.conf as was done in https://gitlab.com/postmarketOS/pmaports/-/merge_requests/1741 broke Sxmo's dmix setup since, if you install to /etc/asound.conf then /etc/alsa/conf.d/ is ignored (Sxmo has it's own /etc/alsa/conf.d/ file to setup dmix/dsnoop).
Edited by Administrator