CONFIG_VRC4173 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_VRC4173.
Result is shown for kernelversion 5.4.123

Add NEC VRC4173 companion chip support

modulename: vrc4173.ko

configname: CONFIG_VRC4173

Linux/MIPS Kernel Configuration
└─>Machine selection
└─>Add NEC VRC4173 companion chip support
In linux kernel since version 2.6.12  
The NEC VRC4173 is a companion chip for NEC VR4122/VR4131.

source code: