Move Bluetooth audio de-/encoding to hardware

...better battery life & quality!

References

• https://github.com/MarijnS95/device-sony-seine/commits/master
• https://github.com/MarijnS95/device-sony-common/commits/28a6c069e1e2133516e0d1e1415c38ac8c765c31I
• http://strayinsights.blogspot.com/2018/05/android-audio-tutorial-part-three.html

Finally you'll need to pull btaudio_offload_if.so from Pixel factory images and put it in vendor/lib64

~ Marijn

Notes

As btaudio_offload_if.so can't be redistributed, an own OSS version is needed...