ASoC: mop500: Staticize non exported struct

The mop500_dai_links struct is not used outside of mop500.c, so make it static.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/ux500/mop500.c

@@ -27,7 +27,7 @@
 #include "mop500_ab8500.h"
 
 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
-struct snd_soc_dai_link mop500_dai_links[] = {
+static struct snd_soc_dai_link mop500_dai_links[] = {
 	{
 		.name = "ab8500_0",
 		.stream_name = "ab8500_0",