CONFIG_ARCH_R8A7791 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
R-Car M2-W (R8A77910)
modulename: regulator-quirk-rcar-gen2.ko
configname: CONFIG_ARCH_R8A7791
Linux Kernel Configuration
└─>Renesas ARM SoCs
└─>R-Car M2-W (R8A77910)