ALSA: hda - add missing comma in ad1884_slave_vols

Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_analog.c

@@ -3256,7 +3256,7 @@ static const char *ad1884_slave_vols[] = {
 	"Mic Playback Volume",
 	"CD Playback Volume",
 	"Internal Mic Playback Volume",
-	"Docking Mic Playback Volume"
+	"Docking Mic Playback Volume",
 	/* "Beep Playback Volume", */
 	"IEC958 Playback Volume",
 	NULL