CONFIG_MACH_SPITZ is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Enable Sharp Zaurus SL-3000 (Spitz) Support
configname: CONFIG_MACH_SPITZ
Linux Kernel Configuration
└─>Intel PXA2xx/PXA3xx Implementations
└─>Enable Sharp Zaurus SL-3000 (Spitz) Support