[ALSA] sound: es1968.c fox shadowed variable warning

id is used when initializing the mixer elements, use elem_id here
instead.
sound/pci/es1968.c:1963:25: warning: symbol 'id' shadows an earlier one
sound/pci/es1968.c:129:13: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/es1968.c

@@ -1972,7 +1972,7 @@ snd_es1968_mixer(struct es1968 *chip)
 {
 	struct snd_ac97_bus *pbus;
 	struct snd_ac97_template ac97;
-	struct snd_ctl_elem_id id;
+	struct snd_ctl_elem_id elem_id;
 	int err;
 	static struct snd_ac97_bus_ops ops = {
 		.write = snd_es1968_ac97_write,
@@ -1989,14 +1989,14 @@ snd_es1968_mixer(struct es1968 *chip)
 		return err;
 
 	/* attach master switch / volumes for h/w volume control */
-	memset(&id, 0, sizeof(id));
-	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
-	strcpy(id.name, "Master Playback Switch");
-	chip->master_switch = snd_ctl_find_id(chip->card, &id);
-	memset(&id, 0, sizeof(id));
-	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
-	strcpy(id.name, "Master Playback Volume");
-	chip->master_volume = snd_ctl_find_id(chip->card, &id);
+	memset(&elem_id, 0, sizeof(elem_id));
+	elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	strcpy(elem_id.name, "Master Playback Switch");
+	chip->master_switch = snd_ctl_find_id(chip->card, &elem_id);
+	memset(&elem_id, 0, sizeof(elem_id));
+	elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	strcpy(elem_id.name, "Master Playback Volume");
+	chip->master_volume = snd_ctl_find_id(chip->card, &elem_id);
 
 	return 0;
 }