Add custom audio amplifier for TFA amp feedback

 * Based on observing reverse engineering from davinci stock audio HAL.
 * Fixes speaker distortion on high volume.

 * Same logic with Smosia, rewritten by me.

Co-authored-by: Smosia <stasenko_nv@nrcki.ru>
Change-Id: I369555a9fcb06065177636b436d2e006c7a0b07d