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

CONFIG_OMAP_DEBUG_DEVICES (not configurable)

modulename: debug-devices.ko

configname: CONFIG_OMAP_DEBUG_DEVICES

Linux Kernel Configuration
└─>TI OMAP Implementations
└─>OMAP_DEBUG_DEVICES
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
For debug cards on TI reference boards.

source code:

is selected by
CONFIG_OMAP_DEBUG_LEDS

is depended by
CONFIG_MACH_OMAP_H4