Add configuration for gd77.
Add configuration for gd77.

sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource,sergev/vak-opensource