CONFIG_ARCH_AT91_NONE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_AT91_NONE.
Result is shown for kernelversion 6.5.1

None

configname: CONFIG_ARCH_AT91_NONE

Atmel AT91 Processor Devices for non DT boards
└─>None
In linux kernel since version 3.1 (release Date: 2011-10-24)