tty: serial: apbuart: Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c
index f3af317..75eb083 100644
--- a/drivers/tty/serial/apbuart.c
+++ b/drivers/tty/serial/apbuart.c
@@ -581,6 +581,7 @@
 	 },
 	{},
 };
+MODULE_DEVICE_TABLE(of, apbuart_match);
 
 static struct platform_driver grlib_apbuart_of_driver = {
 	.probe = apbuart_probe,