ucm2: conf.d: mt8370-evk: Fix the type of mt8370-evk.conf

[GitHub pull_request - opened <github@xxxxxxxxxxxxxxxx>]

alsa-project/alsa-ucm-conf pull request #386 was opened from zoran055:

Fix the type of mt8370-evk.conf at /ucm2/conf.d, to let the symbolic link can correctly point to the conf.

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/386
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/386.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf