default or selected kernelversion does not have config value CONFIG_CLK_RENESAS_VBATTB.
Result is shown for kernelversion 6.6.75

Renesas VBATTB clock controller

modulename: clk-vbattb.ko

configname: CONFIG_CLK_RENESAS_VBATTB

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>Renesas VBATTB clock controller
In linux kernel since version 6.13 (release Date: 2025-01-19)  
source code:
drivers/clk/renesas/clk-vbattb.c

depends
CONFIG_CLK_RENESAS
CONFIG_COMMON_CLK
CONFIG_ARCH_RZG2L or CONFIG_COMPILE_TEST