ARM: S3C24XX: Add initial s3c_gpio configuration code

Add support for s3c_gpio_setcfg() and s3c_gpio_setpull() implementations
to get ready for removal of the specific code being used by s3c24xx.

Also rename the s3c_gpio_setcfg_s3c24xx_banka to s3c_gpio_setcfg_s3c24xx_a
as seen in the header file to correct a build warning.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index 6e93ef8..a830fad 100644
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -9,6 +9,7 @@
 	select NO_IOPORT
 	select ARCH_REQUIRE_GPIOLIB
 	select S3C_DEVICE_NAND
+	select S3C_GPIO_CFG_S3C24XX
 	help
 	  Base platform code for any Samsung S3C24XX device