ALSA: HDA: Fixup Realtek headphone pin initialization

This typo caused headphone pins not to be initialized correctly.

BugLink: https://bugs.launchpad.net/bugs/871582
Reported-by: Effenberg
Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -3263,7 +3263,7 @@ static void alc_auto_init_extra_out(struct hda_codec *codec)
 	int i;
 	hda_nid_t pin, dac;
 
-	for (i = 0; i < spec->autocfg.speaker_outs; i++) {
+	for (i = 0; i < spec->autocfg.hp_outs; i++) {
 		pin = spec->autocfg.hp_pins[i];
 		if (!pin)
 			break;