irqchip: irq-bcm2835: Add terminating entry for of_device_id table

The of_device_id table is supposed to be zero-terminated.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

drivers/irqchip/irq-bcm2835.c

@@ -168,7 +168,8 @@ static int __init armctrl_of_init(struct device_node *node,
 }
 
 static struct of_device_id irq_of_match[] __initconst = {
-	{ .compatible = "brcm,bcm2835-armctrl-ic", .data = armctrl_of_init }
+	{ .compatible = "brcm,bcm2835-armctrl-ic", .data = armctrl_of_init },
+	{ }
 };
 
 void __init bcm2835_init_irq(void)