ASoC: rt711-sdca: Constify static struct snd_soc_dai_ops

The snd_soc_dai_ops structures is only stored in the ops field of a
snd_soc_dai_driver structure, so make the snd_soc_dai_ops structure
const to allow the compiler to put it in read-only memory.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20210408062647.803141-1-yebin10@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt711-sdca.c

@@ -1268,7 +1268,7 @@ static int rt711_sdca_pcm_hw_free(struct snd_pcm_substream *substream,
 #define RT711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE)
 
-static struct snd_soc_dai_ops rt711_sdca_ops = {
+static const struct snd_soc_dai_ops rt711_sdca_ops = {
 	.hw_params	= rt711_sdca_pcm_hw_params,
 	.hw_free	= rt711_sdca_pcm_hw_free,
 	.set_sdw_stream	= rt711_sdca_set_sdw_stream,