Append AUX mixer for HITL simulation (#5457)

src/modules/mavlink/mavlink_messages.cpp

@@ -2295,7 +2295,8 @@ protected:
 			    system_type == MAV_TYPE_HEXAROTOR ||
 			    system_type == MAV_TYPE_OCTOROTOR ||
 			    system_type == MAV_TYPE_VTOL_DUOROTOR ||
-			    system_type == MAV_TYPE_VTOL_QUADROTOR) {
+			    system_type == MAV_TYPE_VTOL_QUADROTOR ||
+			    system_type == MAV_TYPE_VTOL_RESERVED2) {
 
 				/* multirotors: set number of rotor outputs depending on type */
 
@@ -2318,6 +2319,10 @@ protected:
 					n = 4;
 					break;
 
+				case MAV_TYPE_VTOL_RESERVED2:
+					n = 8;
+					break;
+
 				default:
 					n = 8;
 					break;