ASoC: codecs: msm8916-wcd-digital: 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/msm8916-wcd-digital.c

@@ -788,7 +788,7 @@ static void msm8916_wcd_digital_shutdown(struct snd_pcm_substream *substream,
 			    LPASS_CDC_CLK_PDM_CTL_PDM_CLK_SEL_MASK, 0);
 }
 
-static struct snd_soc_dai_ops msm8916_wcd_digital_dai_ops = {
+static const struct snd_soc_dai_ops msm8916_wcd_digital_dai_ops = {
 	.startup = msm8916_wcd_digital_startup,
 	.shutdown = msm8916_wcd_digital_shutdown,
 	.hw_params = msm8916_wcd_digital_hw_params,