ASoC: rt5663: constify snd_soc_dai_ops structure

This structure is only stored in the ops field of a snd_soc_dai_driver
structure. That field is declared const, so snd_soc_dai_ops structures
that have this property can be declared as const also.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5663.c

@@ -2888,7 +2888,7 @@ static int rt5663_resume(struct snd_soc_codec *codec)
 #define RT5663_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
 
-static struct snd_soc_dai_ops rt5663_aif_dai_ops = {
+static const struct snd_soc_dai_ops rt5663_aif_dai_ops = {
 	.hw_params = rt5663_hw_params,
 	.set_fmt = rt5663_set_dai_fmt,
 	.set_sysclk = rt5663_set_dai_sysclk,