CONFIG_NOMADIK_8815 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_NOMADIK_8815 (not configurable)

modulename: cpu-8815.ko

configname: CONFIG_NOMADIK_8815

Linux Kernel Configuration
└─>NOMADIK_8815
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
source code:
arch/arm/mach-nomadik/cpu-8815.c