CONFIG_ARCH_R8A7796 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Renesas R-Car M3-W SoC Platform
configname: CONFIG_ARCH_R8A7796
Linux Kernel Configuration
└─>Platform selection
└─>Renesas R-Car M3-W SoC Platform
In linux kernel since version 3.10 (release Date: 2013-06-30)
This enables support for the Renesas R-Car M3-W SoC.