CONFIG_MACH_W90P950EVB is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Nuvoton NUC950 Evaluation Board
modulename: mach-nuc950evb.ko
configname: CONFIG_MACH_W90P950EVB
Linux Kernel Configuration
└─>NUC950 Machines
└─>Nuvoton NUC950 Evaluation Board
In linux kernel since version 2.6.32 (release Date: 2009-12-02)
Say Y here if you are using the Nuvoton NUC950EVB