CONFIG_MACH_WBD222 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Wiliboard WBD-222

modulename: board-wbd222.ko

configname: CONFIG_MACH_WBD222

Linux Kernel Configuration
└─>Cortina Systems Gemini Implementations
└─>Wiliboard WBD-222
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
Say Y here if you intend to run this kernel on a
Wiliboard WBD-222.

source code:
arch/arm/mach-gemini/board-wbd222.c