ALSA: hda - Fix regression for slave SPDIF setups

The commit [a551d91473e5: ALSA: hda - Use regmap for command verb
caches, too] introduced a regression due to a typo in the conversion;
the IEC958 status bits of slave digital devices aren't updated
correctly.  This patch corrects it.

Fixes: a551d91473e5 ('ALSA: hda - Use regmap for command verb caches, too')
Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index e70a7fb..873ed1b 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2529,7 +2529,7 @@
 	if (!d)
 		return;
 	for (; *d; d++)
-		snd_hdac_regmap_update(&codec->core, nid,
+		snd_hdac_regmap_update(&codec->core, *d,
 				       AC_VERB_SET_DIGI_CONVERT_1, mask, val);
 }