default or selected kernelversion does not have config value CONFIG_CLK_R8A779G0.
Result is shown for kernelversion 6.9-rc1

R-Car V4H clock support

modulename: r8a779g0-cpg-mssr.ko

configname: CONFIG_CLK_R8A779G0

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>R-Car V4H clock support
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code: