CONFIG_NONMONARCH_SUPPORT is not available for thedefaultarchitecture x86.
Result is shown for architecture ppc
default or selected kernelversion does not have config value CONFIG_NONMONARCH_SUPPORT.
Result is shown for kernelversion 5.19-rc1

Enable Non-Monarch Support

configname: CONFIG_NONMONARCH_SUPPORT

Linux/PowerPC Kernel Configuration
└─>Platform options
└─>Enable Non-Monarch Support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
depends
CONFIG_PRPMC800