ASoC: tas5720: 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/tas5720.c

@@ -507,7 +507,7 @@ static struct snd_soc_codec_driver soc_codec_dev_tas5720 = {
 #define TAS5720_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\
 			 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
 
-static struct snd_soc_dai_ops tas5720_speaker_dai_ops = {
+static const struct snd_soc_dai_ops tas5720_speaker_dai_ops = {
 	.hw_params	= tas5720_hw_params,
 	.set_fmt	= tas5720_set_dai_fmt,
 	.set_tdm_slot	= tas5720_set_dai_tdm_slot,