universal9810-common: Decrease headset incall audio
Description
This MR brings mixer gains to the DT and modifies its values to make the in call audio lower
Issue(s)
https://gitlab.e.foundation/e/backlog/-/issues/7298
Test environment
Start a pipeline with FEATURE_BRANCH as this branch
Test procedures
Make a call with official build and the output of the pipeline
Check list
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Self review -
Test procedure explained -
Tested on fresh install -
Tested applied as an update -
License -
Internal documentation -
User documentation
Edited by Ahmed Harhash