rotorcraft: make it the default to go into kill mode until ahrs is al…

…igned

to be able to change the mode via RC if the AHRS is not yet aligned, define AUTOPILOT_DISABLE_AHRS_KILL

sw/airborne/firmwares/rotorcraft/autopilot.c

@@ -46,7 +46,7 @@ bool_t   autopilot_detect_ground_once;
 
 #define AUTOPILOT_IN_FLIGHT_TIME    40
 
-#ifdef AUTOPILOT_KILL_WITHOUT_AHRS
+#ifndef AUTOPILOT_DISABLE_AHRS_KILL
 #include "subsystems/ahrs.h"
 static inline int ahrs_is_aligned(void) {
   return (ahrs.status == AHRS_RUNNING);