AP_Baro: change class name from SITL::SITL to SITL::SIM

libraries/AP_Baro/AP_Baro.cpp

@@ -624,7 +624,7 @@ void AP_Baro::init(void)
         break;
     }
 #elif CONFIG_HAL_BOARD == HAL_BOARD_SITL
-    SITL::SITL *sitl = AP::sitl();
+    SITL::SIM *sitl = AP::sitl();
     if (sitl == nullptr) {
         AP_HAL::panic("No SITL pointer");
     }

libraries/AP_Baro/AP_Baro_SITL.h

@@ -18,7 +18,7 @@ protected:
 
 private:
     uint8_t _instance;
-    SITL::SITL *_sitl;
+    SITL::SIM *_sitl;
 
     // barometer delay buffer variables
     struct readings_baro {

libraries/AP_Baro/examples/BARO_generic/BARO_generic.cpp

@@ -38,7 +38,7 @@ static AP_BoardConfig board_config;
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
 #include <SITL/SITL.h>
-SITL::SITL sitl;
+SITL::SIM sitl;
 #endif
 
 void setup();