CONFIG_ARCH_R7S72100 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
RZ/A1H (R7S72100)
modulename: setup-r7s72100.ko
configname: CONFIG_ARCH_R7S72100
Linux Kernel Configuration
└─>Renesas ARM SoCs
└─>RZ/A1H (R7S72100)