ControllerInterface: replace Reinitialize with RefreshDevices

The SDL backend crashes when you close a joystick after SDL_Quit has
been called. Some backends don't need to be shutdown and
re-initialized everytime, we can just ask to enumerate devices again.

Source/Core/InputCommon/ControllerInterface/OSX/OSX.h

@@ -9,6 +9,7 @@ namespace ciface
 namespace OSX
 {
 void Init(void* window);
+void PopulateDevices(void* window);
 void DeInit();
 
 void DeviceElementDebugPrint(const void*, void*);