ASoC: Staticise PCM operations tables

The PCM operations tables are not exported directly but are instead
included in the platform structure so should be declared static.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/atmel/atmel-pcm.c b/sound/soc/atmel/atmel-pcm.c
index 3dcdc4e..9ef6b96 100644
--- a/sound/soc/atmel/atmel-pcm.c
+++ b/sound/soc/atmel/atmel-pcm.c
@@ -347,7 +347,7 @@
 		       vma->vm_end - vma->vm_start, vma->vm_page_prot);
 }
 
-struct snd_pcm_ops atmel_pcm_ops = {
+static struct snd_pcm_ops atmel_pcm_ops = {
 	.open		= atmel_pcm_open,
 	.close		= atmel_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,