CONFIG_S3C2410_GPIO is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_S3C2410_GPIO.
Result is shown for kernelversion 6.2.5

CONFIG_S3C2410_GPIO (not configurable)

modulename: gpio.ko

configname: CONFIG_S3C2410_GPIO

Linux Kernel Configuration
└─>S3C2410_GPIO
In linux kernel since version 2.6.21 (release Date: 2007-04-25)  
GPIO code for S3C2410 and similar processors

source code:
arch/arm/mach-s3c2410/gpio.c