ASoC: cs4349: Constify cs4349_regmap

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Tim Howe <tim.howe@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs4349.c

@@ -264,7 +264,7 @@ static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
 	.num_dapm_routes	= ARRAY_SIZE(cs4349_routes),
 };
 
-static struct regmap_config cs4349_regmap = {
+static const struct regmap_config cs4349_regmap = {
 	.reg_bits		= 8,
 	.val_bits		= 8,