CONFIG_MACH_VERSATILE_AB is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Support Versatile/AB platform
modulename: versatile_ab.ko
configname: CONFIG_MACH_VERSATILE_AB
Linux Kernel Configuration
└─>Versatile platform type
└─>Support Versatile/AB platform
In linux kernel since version 2.6.12
Include support for the ARM(R) Versatile/AP platform.