ALSA: hda - Improve auto-cfg mixer name for ALC260

Instead of fixed "Front" mixer name, try to assign a better name, e.g.
"Master" or "Speaker" fot the primary output volume controls of ALC260
codec.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 07fbf7d..00ed126 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6017,7 +6017,14 @@
 
 	nid = cfg->line_out_pins[0];
 	if (nid) {
-		err = alc260_add_playback_controls(spec, nid, "Front", &vols);
+		const char *pfx;
+		if (!cfg->speaker_pins[0] && !cfg->hp_pins[0])
+			pfx = "Master";
+		else if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
+			pfx = "Speaker";
+		else
+			pfx = "Front";
+		err = alc260_add_playback_controls(spec, nid, pfx, &vols);
 		if (err < 0)
 			return err;
 	}