ASoC: codecs: zx_aud96p22: constify snd_soc_dai_ops structures

These snd_soc_dai_ops structures are only stored in the ops field of
a snd_soc_dai_driver structure, which is const.  Thus, the
snd_soc_dai_ops structures can be const too.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/zx_aud96p22.c

@@ -312,7 +312,7 @@ static int aud96p22_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	return 0;
 }
 
-static struct snd_soc_dai_ops aud96p22_dai_ops = {
+static const struct snd_soc_dai_ops aud96p22_dai_ops = {
 	.set_fmt = aud96p22_set_fmt,
 };