ASoC: tas2770: 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/20210408062646.803053-1-yebin10@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/tas2770.c

@@ -464,7 +464,7 @@ static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
 	return 0;
 }
 
-static struct snd_soc_dai_ops tas2770_dai_ops = {
+static const struct snd_soc_dai_ops tas2770_dai_ops = {
 	.mute_stream = tas2770_mute,
 	.hw_params  = tas2770_hw_params,
 	.set_fmt    = tas2770_set_fmt,