ALSA: hda - Add expose_enum_ctl flag to snd_hda_add_vmaster_hook()

Since it's not always safe to assume that the vmaster hook is purely the
mute-LED control, add the flag indicating whether to expose the mute-LED
enum control or not.  Currently, conexant codec sets this off for non-HP
laptops where EAPD may be used really as EAPD.

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 b69d2fe..8ea2fd6 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5895,7 +5895,7 @@
 	switch (action) {
 	case ALC_FIXUP_ACT_BUILD:
 		spec->vmaster_mute.hook = alc269_fixup_mic2_mute_hook;
-		snd_hda_add_vmaster_hook(codec, &spec->vmaster_mute);
+		snd_hda_add_vmaster_hook(codec, &spec->vmaster_mute, true);
 		/* fallthru */
 	case ALC_FIXUP_ACT_INIT:
 		snd_hda_sync_vmaster_hook(&spec->vmaster_mute);