ASoC: rt5670: add symmetric_rates flag

rt5670 requires symmetric rate of capture and playback.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index 0ec7985..174141f 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -2743,6 +2743,7 @@ static struct snd_soc_dai_driver rt5670_dai[] = {
 			.formats = RT5670_FORMATS,
 		},
 		.ops = &rt5670_aif_dai_ops,
+		.symmetric_rates = 1,
 	},
 	{
 		.name = "rt5670-aif2",
@@ -2762,6 +2763,7 @@ static struct snd_soc_dai_driver rt5670_dai[] = {
 			.formats = RT5670_FORMATS,
 		},
 		.ops = &rt5670_aif_dai_ops,
+		.symmetric_rates = 1,
 	},
 };