Plane: fixed up parameters for quadplane

this fixes quadplane parameters for the new AP_Motors code

ArduPlane/Parameters.cpp

@@ -1106,6 +1106,12 @@ const AP_Param::Info Plane::var_info[] = {
     // @Path: quadplane.cpp
     GOBJECT(quadplane,           "Q_", QuadPlane),
 
+    // @Group: Q_A_
+    // @Path: ../libraries/AC_AttitudeControl/AC_AttitudeControl_Multi.cpp
+    { AP_PARAM_GROUP, "Q_A_", Parameters::k_param_q_attitude_control,
+      (const void *)&plane.quadplane.attitude_control,
+      {group_info : AC_AttitudeControl_Multi::var_info}, AP_PARAM_FLAG_POINTER },
+    
     // RC channel
     //-----------
     // @Group: RC1_

ArduPlane/Parameters.h

@@ -152,6 +152,7 @@ public:
         k_param_fence_retalt = 105,
         k_param_fence_autoenable,
         k_param_fence_ret_rally,
+        k_param_q_attitude_control,
 
         // 110: Telemetry control
         //

ArduPlane/quadplane.cpp

@@ -17,10 +17,6 @@ const AP_Param::GroupInfo QuadPlane::var_info[] = {
 
     // 3 ~ 8 were used by quadplane attitude control PIDs
 
-    // @Group: ATC_
-    // @Path: ../libraries/AC_AttitudeControl/AC_AttitudeControl.cpp
-    AP_SUBGROUPPTR(attitude_control,  "A_", 9, QuadPlane, AC_AttitudeControl_Multi),
-
     // @Param: ANGLE_MAX
     // @DisplayName: Angle Max
     // @Description: Maximum lean angle in all flight modes