Boeffla-Sound: Engine 1.6.3

- delayed apply of changed register settings (credits to Yank) to
  fix issues on CM
- delay time configurable via sysfs (credits to Yank)
- different headphone detection for s3 and note devices
- different call detection
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