ALSA: HDA: Fix volume control naming for surround speakers on Realtek auto-parser

When more than one pair of internal speakers is present, allow names
according to their channels.
Tested-by: NBartłomiej Żogała <nusch88@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -5080,7 +5080,9 @@ static const char *alc_get_line_out_pfx(const struct auto_pin_cfg *cfg,
 
 	switch (cfg->line_out_type) {
 	case AUTO_PIN_SPEAKER_OUT:
-		return "Speaker";
+		if (cfg->line_outs == 1)
+			return "Speaker";
+		break;
 	case AUTO_PIN_HP_OUT:
 		return "Headphone";
 	default: