CONFIG_ARCH_R8A7779 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

R-Car H1 (R8A77790)

modulename: setup-r8a7779.ko

and/or

clock-r8a7779.ko

and/or

clk-r8a7779.ko

configname: CONFIG_ARCH_R8A7779

Linux Kernel Configuration
└─>Renesas ARM SoCs
└─>R-Car H1 (R8A77790)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
/arch/arm/mach-shmobile/


is selected by
CONFIG_MACH_MARZEN