CONFIG_PLAT_VERSATILE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_PLAT_VERSATILE (not configurable)

configname: CONFIG_PLAT_VERSATILE

Linux Kernel Configuration
└─>System Type
└─>PLAT_VERSATILE
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
is selected by
CONFIG_CLKSRC_VERSATILE