plat-mxc: Provide irq_chip name for GPIO IRQs

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
index d17b3c9..e396df8 100644
--- a/arch/arm/plat-mxc/gpio.c
+++ b/arch/arm/plat-mxc/gpio.c
@@ -233,6 +233,7 @@
 }
 
 static struct irq_chip gpio_irq_chip = {
+	.name = "GPIO",
 	.irq_ack = gpio_ack_irq,
 	.irq_mask = gpio_mask_irq,
 	.irq_unmask = gpio_unmask_irq,