ASoC: cirrus: sync parameter naming (rate/sample_bits)

This patch syncs naming rule.

 - xxx_rates;
 + xxx_rate;

 - xxx_samplebits;
 + xxx_sample_bits;
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pn26oli8.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/cirrus/ep93xx-i2s.c

@@ -404,7 +404,7 @@ static const struct snd_soc_dai_ops ep93xx_i2s_dai_ops = {
 #define EP93XX_I2S_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
 
 static struct snd_soc_dai_driver ep93xx_i2s_dai = {
-	.symmetric_rates= 1,
+	.symmetric_rate	= 1,
 	.probe		= ep93xx_i2s_dai_probe,
 	.playback	= {
 		.channels_min	= 2,