ALSA: hda - Fix typos in slave controls in patch_sigmatel.c

"Headphone Playback ..." appears twice in slave_vols[] and slave_sws[].
They should be "Headphone Playback2 ..."
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_sigmatel.c

@@ -1207,7 +1207,7 @@ static const char *slave_vols[] = {
 	"LFE Playback Volume",
 	"Side Playback Volume",
 	"Headphone Playback Volume",
-	"Headphone Playback Volume",
+	"Headphone2 Playback Volume",
 	"Speaker Playback Volume",
 	"External Speaker Playback Volume",
 	"Speaker2 Playback Volume",
@@ -1221,7 +1221,7 @@ static const char *slave_sws[] = {
 	"LFE Playback Switch",
 	"Side Playback Switch",
 	"Headphone Playback Switch",
-	"Headphone Playback Switch",
+	"Headphone2 Playback Switch",
 	"Speaker Playback Switch",
 	"External Speaker Playback Switch",
 	"Speaker2 Playback Switch",