ALSA: hda/conexant: Convert to cdev-variant of mic-mute LED controls

This patch converts the remaining user of
snd_hda_gen_add_micmute_led() in Conexant codec driver into the new
snd_hda_gen_add_micmute_led_cdev().
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20200618110842.27238-5-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_conexant.c

@@ -640,12 +640,14 @@ static void cxt_fixup_gpio_mute_hook(void *private_data, int enabled)
 }
 
 /* turn on/off mic-mute LED via GPIO per capture hook */
-static void cxt_gpio_micmute_update(struct hda_codec *codec)
+static int cxt_gpio_micmute_update(struct led_classdev *led_cdev,
+				   enum led_brightness brightness)
 {
+	struct hda_codec *codec = dev_to_hda_codec(led_cdev->dev->parent);
 	struct conexant_spec *spec = codec->spec;
 
-	cxt_update_gpio_led(codec, spec->gpio_mic_led_mask,
-			    spec->gen.micmute_led.led_value);
+	cxt_update_gpio_led(codec, spec->gpio_mic_led_mask, brightness);
+	return 0;
 }
 
 
@@ -665,7 +667,7 @@ static void cxt_fixup_mute_led_gpio(struct hda_codec *codec,
 		spec->mute_led_polarity = 0;
 		spec->gpio_mute_led_mask = 0x01;
 		spec->gpio_mic_led_mask = 0x02;
-		snd_hda_gen_add_micmute_led(codec, cxt_gpio_micmute_update);
+		snd_hda_gen_add_micmute_led_cdev(codec, cxt_gpio_micmute_update);
 	}
 	snd_hda_add_verbs(codec, gpio_init);
 	if (spec->gpio_led)