May be anyone have firmware with GPS support?
I want use standart UART GPS module with speed 9600...
http://www.waveshare.com/uart-gps-neo-6m.htm
Now I have full source firmware BPI-A83T-Android.tar.bz2 and may be our enginners can understand "what and where they will need make a changes for supporting GPS" but for this need a time 
Now I choosing for our project: bananaPi(+external GPS which now dont work +LTE modem which now dont work ) or dragonboard410c with integrated GPS module....
Now I open firmware, and see folder:
BPI-A83T-Android\BPI-A83T-Android\android\hardware\qcom\gps\
with:
Android.mk
CleanSpec.mk
configure.ac
core
etc
loc-api.pc.in
loc_api
Makefile.am
msm8960
platform_lib_abstractions
utils