ARMV7: S5P: rename from CONFIG_S5PC1XX to CONFIG_S5P

Use the same configuration around S5P SoCs.
(s5pc100, s5pc110, s5pc210 and so on)

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 528ca2e..07d395d 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -29,7 +29,7 @@
 COBJS-$(CONFIG_KIRKWOOD_GPIO)	+= kw_gpio.o
 COBJS-$(CONFIG_MX31_GPIO)	+= mx31_gpio.o
 COBJS-$(CONFIG_PCA953X)		+= pca953x.o
-COBJS-$(CONFIG_S5PC1XX)		+= s5p_gpio.o
+COBJS-$(CONFIG_S5P)		+= s5p_gpio.o
 
 COBJS	:= $(COBJS-y)
 SRCS 	:= $(COBJS:.o=.c)