CONFIG_S5PC100_SETUP_KEYPAD is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S5PC100_SETUP_KEYPAD (not configurable)

modulename: setup-keypad.ko

configname: CONFIG_S5PC100_SETUP_KEYPAD

Linux Kernel Configuration
└─>S5PC100_SETUP_KEYPAD
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
Common setup code for KEYPAD GPIO configurations.

source code: