Add UCM for PinePhone

[GitHub pull_request - edited]

alsa-project/alsa-ucm-conf pull request #134 was edited 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#n436

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

I have tested that with this PR, the PinePhone has the expected HiFi and VoiceCall profiles.This testing found that the `File` directive in `SectionUseCase` needs to be absolute (for the symlink to work). I've fixed this in this PR: https://github.com/alsa-project/alsa-ucm-conf/pull/134/commits/5059e57a2197bb38848bbec10f589637df64679e.

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