ASoC: lm59453: Unconstify dai_driver

The core fills in some blanks which makes it annoying to do the right thing
and constify the calls in the core.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/lm49453.c b/sound/soc/codecs/lm49453.c
index c1bc945..99b0a9d 100644
--- a/sound/soc/codecs/lm49453.c
+++ b/sound/soc/codecs/lm49453.c
@@ -1357,7 +1357,7 @@
 };
 
 /* LM49453 dai structure. */
-static const struct snd_soc_dai_driver lm49453_dai[] = {
+static struct snd_soc_dai_driver lm49453_dai[] = {
 	{
 		.name = "LM49453 Headset",
 		.playback = {