default or selected kernelversion does not have config value CONFIG_PINCTRL_PFC_R8A7796.
Result is shown for kernelversion 6.9.9

CONFIG_PINCTRL_PFC_R8A7796 (not configurable)

modulename: pfc-r8a7796.ko

configname: CONFIG_PINCTRL_PFC_R8A7796

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>PINCTRL_PFC_R8A7796
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/pinctrl/sh-pfc/pfc-r8a7796.c