ARM: mmp: append irq name of gpio device

IRQ name is required in gpio-pxa driver. So we need to append the name
in gpio device. Otherwise, we can't register gpio-pxa driver
successfully.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>

arch/arm/mach-mmp/pxa168.c

@@ -167,6 +167,7 @@ struct resource pxa168_resource_gpio[] = {
 	}, {
 		.start	= IRQ_PXA168_GPIOX,
 		.end	= IRQ_PXA168_GPIOX,
+		.name	= "gpio_mux",
 		.flags	= IORESOURCE_IRQ,
 	},
 };