[ARM] S3C64XX: GPIO library support

Add gpiolib registration for the GPIOs available on the
S3C64XX platform

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile
index 9c09b08..a5b7c38 100644
--- a/arch/arm/plat-s3c64xx/Makefile
+++ b/arch/arm/plat-s3c64xx/Makefile
@@ -17,6 +17,7 @@
 obj-y				+= irq.o
 obj-y				+= irq-eint.o
 obj-y				+= clock.o
+obj-y				+= gpiolib.o
 
 # CPU support