CONFIG_MACH_GUMSTIX_F is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Basix, Connex, ws-200ax, ws-400ax systems
configname: CONFIG_MACH_GUMSTIX_F
Linux Kernel Configuration
└─>Intel PXA2xx/PXA3xx Implementations
└─>Basix, Connex, ws-200ax, ws-400ax systems