Boeffla-Sound: Engine 1.6.0
Boeffla-Sound: Engine 1.6.3
Boeffla-Sound: Engine 1.6.4

- show settings in sysfs even if boeffla sound is switched off
- remove legacy interfaces for alternative eq settings + mic mode
- some code cleanup
Boeffla-Sound: Engine 1.6.5

- allow speaker minimum level of 20
Boeffla-Sound: Engine 1.6.6

- allow minimum volume of 0 for both speaker and headphones
Regenerate defconfig for last commits
ZZmoove 0.9beta4 - thanks to @zanezam