Fix sound playback for Santvend
Santvend uses audmux port 3. Set correct pinctrl for sound node. Set correct audmux configuration.
Also, some unneeded properties were removed.
Dear all, On Thursday, 4th September 2025, we will test the new disaster recovery environment. A disaster recovery test will take place between 4:00 PM and 6:00 PM CEST. Please refrain from making any changes, as they will be lost. Once testing is complete, the production environment will be restored. Thank you for your understanding.
Santvend uses audmux port 3. Set correct pinctrl for sound node. Set correct audmux configuration.
Also, some unneeded properties were removed.