ASoC: meson: merge .digital_mute() into .mute_stream()

snd_soc_dai_digital_mute() is internally using both
mute_stream() (1) or digital_mute() (2), but the difference between
these 2 are only handling direction.
We can merge digital_mute() into mute_stream

	int snd_soc_dai_digital_mute(xxx, int direction)
	{
		...
		else if (dai->driver->ops->mute_stream)
(1)			return dai->driver->ops->mute_stream(xxx, direction);
		else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
			 dai->driver->ops->digital_mute)
(2)			return dai->driver->ops->digital_mute(xxx);
		...
	}

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/878sftxxie.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/meson/axg-spdifout.c

@@ -108,7 +108,7 @@ static int axg_spdifout_trigger(struct snd_pcm_substream *substream, int cmd,
 	}
 }
 
-static int axg_spdifout_digital_mute(struct snd_soc_dai *dai, int mute)
+static int axg_spdifout_mute(struct snd_soc_dai *dai, int mute, int direction)
 {
 	struct axg_spdifout *priv = snd_soc_dai_get_drvdata(dai);
 
@@ -285,10 +285,11 @@ static void axg_spdifout_shutdown(struct snd_pcm_substream *substream,
 
 static const struct snd_soc_dai_ops axg_spdifout_ops = {
 	.trigger	= axg_spdifout_trigger,
-	.digital_mute	= axg_spdifout_digital_mute,
+	.mute_stream	= axg_spdifout_mute,
 	.hw_params	= axg_spdifout_hw_params,
 	.startup	= axg_spdifout_startup,
 	.shutdown	= axg_spdifout_shutdown,
+	.no_capture_mute = 1,
 };
 
 static struct snd_soc_dai_driver axg_spdifout_dai_drv[] = {