ASoC: mediatek: Constify static snd_soc_ops

These are only assigned to the ops field in the snd_soc_dai_link struct
which is a pointer to const struct snd_soc_ops. Make them const to allow
the compiler to put them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20211012205521.14098-1-rikard.falkeborn@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/mt2701/mt2701-cs42448.c

@@ -146,7 +146,7 @@ static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static struct snd_soc_ops mt2701_cs42448_be_ops = {
+static const struct snd_soc_ops mt2701_cs42448_be_ops = {
 	.hw_params = mt2701_cs42448_be_ops_hw_params
 };
 

sound/soc/mediatek/mt2701/mt2701-wm8960.c

@@ -40,7 +40,7 @@ static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static struct snd_soc_ops mt2701_wm8960_be_ops = {
+static const struct snd_soc_ops mt2701_wm8960_be_ops = {
 	.hw_params = mt2701_wm8960_be_ops_hw_params
 };
 

sound/soc/mediatek/mt8183/mt8183-mt6358-ts3a227-max98357.c

@@ -335,7 +335,7 @@ static void mt8183_mt6358_tdm_shutdown(struct snd_pcm_substream *substream)
 			__func__, ret);
 }
 
-static struct snd_soc_ops mt8183_mt6358_tdm_ops = {
+static const struct snd_soc_ops mt8183_mt6358_tdm_ops = {
 	.startup = mt8183_mt6358_tdm_startup,
 	.shutdown = mt8183_mt6358_tdm_shutdown,
 };