Changed arming procedure for fixedwing.

With Fixedwing and motorstop enable it auto arms as soon as throttle as above throttle_low.
Also disarming is disabled. (Must cycle power for it to disarm)

Without motorstop there is normal disarm/arming procedure.

src/main/fc/rc_controls.c

@@ -198,6 +198,11 @@ void processRcStickPositions(rxConfig_t *rxConfig, throttleStatus_e throttleStat
    if (isUsingSticksToArm) {
         // Disarm on throttle down + yaw
         if (rcSticks == THR_LO + YAW_LO + PIT_CE + ROL_CE) {
+            // Dont disarm if fixedwing and motorstop
+            if (STATE(FIXED_WING) && feature(FEATURE_MOTOR_STOP)) {
+            return;
+		}
+		else {
             if (ARMING_FLAG(ARMED))
                 mwDisarm();
             else {
@@ -206,6 +211,7 @@ void processRcStickPositions(rxConfig_t *rxConfig, throttleStatus_e throttleStat
                 }
             }
         }
+   }
 
     if (ARMING_FLAG(ARMED)) {
         // actions during armed
@@ -246,6 +252,16 @@ void processRcStickPositions(rxConfig_t *rxConfig, throttleStatus_e throttleStat
         }
     }
 
+// Auto arm on throttle when using fixedwing and motorstop
+    if (isUsingSticksToArm) {
+
+        if ((!throttleStatus == THROTTLE_LOW) && (STATE(FIXED_WING)) && (feature(FEATURE_MOTOR_STOP))) {
+            // Arm via YAW
+            mwArm();
+            return;
+        }
+    }
+
     if (rcSticks == THR_HI + YAW_LO + PIT_LO + ROL_CE) {
         // Calibrating Acc
         accSetCalibrationCycles(CALIBRATING_ACC_CYCLES);