[ARM] S3C64XX: Map GPIO block

Add mapping for GPIO block in the static mappings.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c
index 2559d6a..0bbc0e2 100644
--- a/arch/arm/plat-s3c64xx/cpu.c
+++ b/arch/arm/plat-s3c64xx/cpu.c
@@ -92,6 +92,11 @@
 		.pfn		= __phys_to_pfn(S3C_PA_TIMER),
 		.length		= SZ_16K,
 		.type		= MT_DEVICE,
+	}, {
+		.virtual	= S3C64XX_VA_GPIO,
+		.pfn		= __phys_to_pfn(S3C64XX_PA_GPIO),
+		.length		= SZ_4K,
+		.type		= MT_DEVICE,
 	},
 };