WIP: Add UCM for PinePhone

[GitHub pull_request - opened]

alsa-project/alsa-ucm-conf pull request #134 was opened from tomfitzhenry:

Fixes https://github.com/alsa-project/alsa-ucm-conf/issues/124.

The DTS configuration has had a unique audio card name since 5.14:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi?h=v5.14#n436d

This UCM config is copied from https://gitlab.com/pine64-org/pine64-alsa-ucm/, which is BSD-3-Clause licensed.

This UCM has been tested via Pulseaudio's ALSA_CONFIG_UCM2 environment variable, but I've not yet tested that this UCM, when included in this package, is correctly recognised on a PinePhone as part of this

Todo:

* [ ] Test that this UCM is correctly recognised on a PinePhone.

See also:
* https://gitlab.com/pine64-org/pine64-alsa-ucm/-/merge_requests/1
* https://gitlab.com/pine64-org/pine64-alsa-ucm/-/issues/3

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/134
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/134.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf