ASoC: lm49453: Staticise non-exported symbol lm45453_dai

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/lm49453.c

@@ -1358,7 +1358,7 @@ static struct snd_soc_dai_ops lm49453_lineout_dai_ops = {
 };
 
 /* LM49453 dai structure. */
-struct snd_soc_dai_driver lm49453_dai[] = {
+static const struct snd_soc_dai_driver lm49453_dai[] = {
 	{
 		.name = "LM49453 Headset",
 		.playback = {