can: at91_can: add MODULE_DEVICE_TABLE

This patch adds a MODULE_DEVICE_TABLE for the platform bindings, so that the
module can be loaded automatically by udev.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index fcff73a..14b166b 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1372,6 +1372,7 @@
 		/* sentinel */
 	}
 };
+MODULE_DEVICE_TABLE(platform, at91_can_id_table);
 
 static struct platform_driver at91_can_driver = {
 	.probe = at91_can_probe,