camera_feedback: add to SITL config

cmake/configs/posix_sitl_default.cmake

@@ -60,6 +60,7 @@ set(config_module_list
 	#
 	# General system control
 	#
+	modules/camera_feedback
 	modules/commander
 	modules/events
 	#modules/gpio_led

src/modules/camera_feedback/camera_feedback.cpp

@@ -225,10 +225,11 @@ CameraFeedback::task_main()
 
 }
 
-void
+int
 CameraFeedback::task_main_trampoline(int argc, char *argv[])
 {
 	camera_feedback::g_camera_feedback->task_main();
+	return 0;
 }
 
 static int usage()

src/modules/camera_feedback/camera_feedback.hpp

@@ -113,6 +113,6 @@ private:
 	/**
 	 * Shim for calling task_main from task_create.
 	 */
-	static void	task_main_trampoline(int argc, char *argv[]);
+	static int	task_main_trampoline(int argc, char *argv[]);
 
 };