[ARM] 4481/1: Fix a bug when i.MX is compiled as a module

Fix the unregistration order in the i.MX serial driver

Signed-off-by: Sreekrishnan Venkateswaran <krishhna@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index e42faa4..dc19671 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -1114,8 +1114,8 @@
 
 static void __exit imx_serial_exit(void)
 {
-	uart_unregister_driver(&imx_reg);
 	platform_driver_unregister(&serial_imx_driver);
+	uart_unregister_driver(&imx_reg);
 }
 
 module_init(imx_serial_init);