CONFIG_ARCH_R8A7795 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
default or selected kernelversion does not have config value CONFIG_ARCH_R8A7795.
Result is shown for kernelversion 6.7.7

Renesas R-Car H3 SoC Platform

configname: CONFIG_ARCH_R8A7795

Linux Kernel Configuration
└─>Platform selection
└─>Renesas R-Car H3 SoC Platform
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This enables support for the Renesas R-Car H3 SoC.