CONFIG_ARCH_R8A7796 is not available for the default architecture x86.
Result is shown for architecture arm64
default or selected kernelversion does not have config value CONFIG_ARCH_R8A7796.
Result is shown for kernelversion 5.9.9

Renesas R-Car M3-W SoC Platform

configname: CONFIG_ARCH_R8A7796

Linux Kernel Configuration
└─> Platform selection
└─> Renesas R-Car M3-W SoC Platform

This enables support for the Renesas R-Car M3-W SoC.