ALSA: hda - Fix "unused variable" compile warning

  sound/pci/hda/patch_realtek.c: In function ‘alc_apply_fixup’:
  sound/pci/hda/patch_realtek.c:1724:14: warning: unused variable ‘modelname’

snd_printdd() is evaluated only when CONFIG_SND_DEBUG_VERBOSE=y.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -1721,7 +1721,9 @@ static void alc_apply_fixup(struct hda_codec *codec, int action)
 {
 	struct alc_spec *spec = codec->spec;
 	int id = spec->fixup_id;
+#ifdef CONFIG_SND_DEBUG_VERBOSE
 	const char *modelname = spec->fixup_name;
+#endif
 	int depth = 0;
 
 	if (!spec->fixup_list)