ASoC: kirkwood-i2s: Add __devexit_p at necessary place

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 config
options."

We have __devexit annotation for kirkwood_i2s_dev_remove(), thus add __devexit_p
at necessary place.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/kirkwood/kirkwood-i2s.c

@@ -476,7 +476,7 @@ static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev)
 
 static struct platform_driver kirkwood_i2s_driver = {
 	.probe  = kirkwood_i2s_dev_probe,
-	.remove = kirkwood_i2s_dev_remove,
+	.remove = __devexit_p(kirkwood_i2s_dev_remove),
 	.driver = {
 		.name = DRV_NAME,
 		.owner = THIS_MODULE,