ASoC: cs47125: Constify static struct snd_compress_ops

The snd_compress_ops structs are only stored in the compress_ops field
of a snd_soc_component_driver struct, so make it const to allow the
compiler to put it in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20210526231013.46530-2-rikard.falkeborn@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs47l24.c

@@ -1178,7 +1178,7 @@ static unsigned int cs47l24_digital_vu[] = {
 	ARIZONA_DAC_DIGITAL_VOLUME_4L,
 };
 
-static struct snd_compress_ops cs47l24_compress_ops = {
+static const struct snd_compress_ops cs47l24_compress_ops = {
 	.open		= cs47l24_open,
 	.free		= wm_adsp_compr_free,
 	.set_params	= wm_adsp_compr_set_params,