ASoC: samsung: Add __devexit_p at necessary places

According to the comments in include/linux/init.h:

"Pointers to __devexit functions must use __devexit_p(function_name), the
wrapper will insert either the function_name or NULL, depending on the confi
options."

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Jaswinder Singh <jassi.brar@samsung.com>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: Seungwhan Youn <sw.youn@samsung.com>
Cc: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/samsung/spdif.c b/sound/soc/samsung/spdif.c
index 28c491d..c82b471 100644
--- a/sound/soc/samsung/spdif.c
+++ b/sound/soc/samsung/spdif.c
@@ -475,7 +475,7 @@
 
 static struct platform_driver samsung_spdif_driver = {
 	.probe	= spdif_probe,
-	.remove	= spdif_remove,
+	.remove	= __devexit_p(spdif_remove),
 	.driver	= {
 		.name	= "samsung-spdif",
 		.owner	= THIS_MODULE,