ALSA: hda - Register (new) devices at reconfig

The devices that have been newly added during reconfig must be
registered.  Otherwise they won't be visible to user-space.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_hwdep.c

@@ -175,7 +175,7 @@ static int reconfig_codec(struct hda_codec *codec)
 	err = snd_hda_codec_build_controls(codec);
 	if (err < 0)
 		return err;
-	return 0;
+	return snd_card_register(codec->bus->card);
 }
 
 /*