CONFIG_ARCH_VT8500 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
VIA/WonderMedia 85xx
configname: CONFIG_ARCH_VT8500
ARM system type
└─>VIA/WonderMedia 85xx
In linux kernel since version 2.6.39 (release Date: 2011-05-18)
Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.