Copter: move rc-channel option for lost-vehicle sound up to base class

ArduCopter/RC_Channel.cpp

@@ -366,20 +366,6 @@ void RC_Channel_Copter::do_aux_function(const aux_func_t ch_option, const aux_sw
             }
             break;
 
-        case LOST_COPTER_SOUND:
-            switch (ch_flag) {
-                case HIGH:
-                    AP_Notify::flags.vehicle_lost = true;
-                    break;
-                case MIDDLE:
-                    // nothing
-                    break;
-                case LOW:
-                    AP_Notify::flags.vehicle_lost = false;
-                    break;
-            }
-            break;
-
         case MOTOR_ESTOP:
             // Turn on Emergency Stop logic when channel is high
             copter.set_motor_emergency_stop(ch_flag == HIGH);

ArduCopter/motors.cpp

@@ -342,7 +342,7 @@ void Copter::lost_vehicle_check()
     static uint8_t soundalarm_counter;
 
     // disable if aux switch is setup to vehicle alarm as the two could interfere
-    if (rc().find_channel_for_option(RC_Channel::aux_func::LOST_COPTER_SOUND)) {
+    if (rc().find_channel_for_option(RC_Channel::aux_func::LOST_VEHICLE_SOUND)) {
         return;
     }