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/mmp2.c b/arch/arm/mach-mmp/mmp2.c
index d94d114..c7592f1 100644
--- a/arch/arm/mach-mmp/mmp2.c
+++ b/arch/arm/mach-mmp/mmp2.c
@@ -164,7 +164,7 @@
 };
 
 struct platform_device mmp2_device_gpio = {
-	.name		= "pxa-gpio",
+	.name		= "mmp2-gpio",
 	.id		= -1,
 	.num_resources	= ARRAY_SIZE(mmp2_resource_gpio),
 	.resource	= mmp2_resource_gpio,