sun4i-codec: add routing for headphones and internal speaker

alsa-project/alsa-ucm-conf pull request #491 was opened from tokyovigilante:

The sun4i-codec kernel driver covers a large number of Allwinner SoCs. The H616 codec has a single line-out route, which is used in concert with a Toshiba mux chip to send audio to either an internal speaker or headphone jack on a number of Anbernic handheld gaming devices.

Add a UCM configuration to allow enabling/disabling the speaker amp depending on whether headphones are in use or not.

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/491 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/491.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf