default or selected kernelversion does not have config value CONFIG_ARCH_RANDOM.
Result is shown for kernelversion 6.9.5

x86 architectural random number generator

modulename: arch_random.ko

configname: CONFIG_ARCH_RANDOM

Linux Kernel Configuration
└─>Processor type and features
└─>x86 architectural random number generator
In linux kernel since version 2.6.32.7 (release Date: 2010-01-28)  
Enable the x86 architectural RDRAND instruction
(Intel Bull Mountain technology) to generate random numbers.
If supported, this is a high bandwidth, cryptographically
secure hardware random number generator.