ASoC: Staticise WM9712 DAI list

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>

sound/soc/codecs/wm9712.c

@@ -524,7 +524,7 @@ static struct snd_soc_dai_ops wm9712_dai_ops_aux = {
 	.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,