DataFlash: added SITL header

libraries/AP_HAL_AVR/Scheduler.cpp

@@ -1,3 +1,7 @@
+/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
+
+#include <AP_HAL.h>
+#if (CONFIG_HAL_BOARD == HAL_BOARD_APM1 || CONFIG_HAL_BOARD == HAL_BOARD_APM2)
 
 #include <avr/io.h>
 #include <avr/interrupt.h>
@@ -216,3 +220,5 @@ void AVRScheduler::reboot() {
 
     for(;;);
 }
+
+#endif

libraries/DataFlash/DataFlash.h

@@ -93,5 +93,6 @@ public:
 
 #include "DataFlash_APM1.h"
 #include "DataFlash_APM2.h"
+#include "DataFlash_SITL.h"
 
 #endif