CONFIG_MACH_NOKIA_N800 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_MACH_NOKIA_N800.
Result is shown for kernelversion 6.5.1

CONFIG_MACH_NOKIA_N800 (not configurable)

configname: CONFIG_MACH_NOKIA_N800

Linux Kernel Configuration
└─>TI OMAP2/3/4 Specific Features
└─>MACH_NOKIA_N800
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  

is depended by
CONFIG_MACH_NOKIA_N8X0