ALSA: usb-audio: neaten MODULE_DEVICE_TABLE placement

Minor style fix, following a general code style in the kernel.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/card.c

@@ -714,8 +714,7 @@ static struct usb_device_id usb_audio_ids [] = {
       .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL },
     { }						/* Terminating entry */
 };
-
-MODULE_DEVICE_TABLE (usb, usb_audio_ids);
+MODULE_DEVICE_TABLE(usb, usb_audio_ids);
 
 /*
  * entry point for linux usb interface