Added HIDAPI rumble debug info

src/joystick/hidapi/SDL_hidapi_rumble.c

@@ -77,7 +77,10 @@ static int SDL_HIDAPI_RumbleThread(void *data)
         if (request) {
             SDL_LockMutex(request->device->dev_lock);
             if (request->device->dev) {
-                hid_write( request->device->dev, request->data, request->size );
+#ifdef DEBUG_RUMBLE
+                HIDAPI_DumpPacket("Rumble packet: size = %d", request->data, request->size);
+#endif
+                hid_write(request->device->dev, request->data, request->size);
             }
             SDL_UnlockMutex(request->device->dev_lock);
             (void)SDL_AtomicDecRef(&request->device->rumble_pending);