mfd: terminate pcf50633 i2c_device_id list

The i2c_device_id list is supposed to be zero-terminated.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Balaji Rao <balajirrao@openmoko.org>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drivers/mfd/pcf50633-core.c

@@ -678,6 +678,7 @@ static int __devexit pcf50633_remove(struct i2c_client *client)
 
 static struct i2c_device_id pcf50633_id_table[] = {
 	{"pcf50633", 0x73},
+	{/* end of list */}
 };
 
 static struct i2c_driver pcf50633_driver = {