ASoC: Staticise WM9712 DAI list

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index f8f37ae..cebeb93 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -524,7 +524,7 @@
 	.prepare	= ac97_aux_prepare,
 };
 
-struct snd_soc_dai_driver wm9712_dai[] = {
+static struct snd_soc_dai_driver wm9712_dai[] = {
 {
 	.name = "wm9712-hifi",
 	.ac97_control = 1,