ARM: pxa: remove cpu_is_xxx in gpio driver

Avoid to use cpu_is_xxx() in pxa gpio driver. Use platform_device_id
to identify the difference.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/mach-mmp/pxa910.c b/arch/arm/mach-mmp/pxa910.c
index 36cb321..ce6393a 100644
--- a/arch/arm/mach-mmp/pxa910.c
+++ b/arch/arm/mach-mmp/pxa910.c
@@ -152,7 +152,7 @@
 };
 
 struct platform_device pxa910_device_gpio = {
-	.name		= "pxa-gpio",
+	.name		= "mmp-gpio",
 	.id		= -1,
 	.num_resources	= ARRAY_SIZE(pxa910_resource_gpio),
 	.resource	= pxa910_resource_gpio,