CONFIG_S5PC100_SETUP_FB_24BPP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_S5PC100_SETUP_FB_24BPP (not configurable)

modulename: setup-fb-24bpp.ko

configname: CONFIG_S5PC100_SETUP_FB_24BPP

Linux Kernel Configuration
└─>S5PC100_SETUP_FB_24BPP
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Common setup code for S5PC1XX with an 24bpp RGB display helper.

source code: