[ARM] Add input_devclass support to SA1111 PS/2 port driver.

drivers/input/serio/sa1111ps2.c

@@ -9,6 +9,7 @@
  */
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/serio.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
@@ -343,6 +344,7 @@ static struct sa1111_driver ps2_driver = {
 	.drv = {
 		.name		= "sa1111-ps2",
 		.bus		= &sa1111_bus_type,
+		.devclass	= &input_devclass,
 		.probe		= ps2_probe,
 		.remove		= ps2_remove,
 		.suspend	= ps2_suspend,