CONFIG_S5P_GPIO_INT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S5P_GPIO_INT (not configurable)

modulename: irq-gpioint.ko

configname: CONFIG_S5P_GPIO_INT

Linux Kernel Configuration
└─>S5P_GPIO_INT
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Common code for the GPIO interrupts (other than external interrupts.)

source code: