Add Boeffla Sound Engine

Boeffla-Sound: Engine 1.6.0

Boeffla Sound: FM radio not available with LTE models

set #ifdef conditional to disable unused logic

Credits to faux123 for the proper exclusions using #ifdefs instead of just removing the FM radio related code

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

Change-Id: I587af29b5f59e9abf2831919f9af5e0531a7615b