CONFIG_GPIO_SAMSUNG is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_GPIO_SAMSUNG (not configurable)

modulename: gpio-samsung.ko

configname: CONFIG_GPIO_SAMSUNG

Linux Kernel Configuration
└─>Samsung Common options
└─>GPIO_SAMSUNG
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code: