AP_AHRS_DCM: moved var_info to belong to AP_AHRS_DCM instead of AP_AHRS

libraries/AP_AHRS/AP_AHRS_DCM.cpp

@@ -30,7 +30,7 @@
 #define SPIN_RATE_LIMIT 20
 
 // table of user settable parameters
-const AP_Param::GroupInfo AP_AHRS::var_info[] PROGMEM = {
+const AP_Param::GroupInfo AP_AHRS_DCM::var_info[] PROGMEM = {
     // @Param: YAW_P
     // @DisplayName: Yaw P
     // @Description: This controls the weight the compass has on the overall heading

libraries/AP_AHRS/AP_AHRS_DCM.h

@@ -48,6 +48,9 @@ public:
 	AP_Float	_kp;
 	AP_Float	gps_gain;
 
+	// for holding parameters
+	static const struct AP_Param::GroupInfo var_info[];
+
 private:
 	float		_ki;
 	float		_ki_yaw;