Port PX4 to BeagleBone Blue Board using library librobotcontrol instead of a submodule

src/modules/sensors/parameters.h

@@ -143,6 +143,7 @@ struct Parameters {
 	float battery_v_div;
 	float battery_a_per_v;
 	int32_t battery_source;
+	int32_t battery_adc_channel;
 
 	float baro_qnh;
 
@@ -223,6 +224,7 @@ struct ParameterHandles {
 	param_t battery_v_div;
 	param_t battery_a_per_v;
 	param_t battery_source;
+	param_t battery_adc_channel;
 
 	param_t board_rotation;