ARM: SAMSUNG: Add GPIO configuration read calls

Add the necessary 1,2 and 4 bit configuration read calls for the new
gpio code to allow removal of the old s3c24xx gpio code.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s5p6440/gpio.c b/arch/arm/mach-s5p6440/gpio.c
index b0ea741..262dc75 100644
--- a/arch/arm/mach-s5p6440/gpio.c
+++ b/arch/arm/mach-s5p6440/gpio.c
@@ -161,12 +161,15 @@
 	}, {
 		.cfg_eint	= 0,
 		.set_config	= s3c_gpio_setcfg_s3c24xx,
+		.get_config	= s3c_gpio_getcfg_s3c24xx,
 	}, {
 		.cfg_eint	= 2,
 		.set_config	= s3c_gpio_setcfg_s3c24xx,
+		.get_config	= s3c_gpio_getcfg_s3c24xx,
 	}, {
 		.cfg_eint	= 3,
 		.set_config	= s3c_gpio_setcfg_s3c24xx,
+		.get_config	= s3c_gpio_getcfg_s3c24xx,
 	},
 };
 
@@ -279,6 +282,8 @@
 	for (; nr_chips > 0; nr_chips--, chipcfg++) {
 		if (!chipcfg->set_config)
 			chipcfg->set_config	= s3c_gpio_setcfg_s3c64xx_4bit;
+		if (!chipcfg->get_config)
+			chipcfg->get_config	= s3c_gpio_getcfg_s3c64xx_4bit;
 		if (!chipcfg->set_pull)
 			chipcfg->set_pull	= s3c_gpio_setpull_updown;
 		if (!chipcfg->get_pull)