ucm-config: Use the software volume on Mi Earphones

If we use the hardware volume control, the device will output the loud
voice just after plugged. Use the software volume instead to fix this

TEST=Verified by ODM

Change-Id: I6b014a410cc4037457af15b05b4ae1f895494797
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2809828
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Tested-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
2 files changed