CONFIG_PINCTRL_RZT2H is not available for the selected architecture x86.
Result is shown for architecture 64BIT

pin control support for RZ/N2H and RZ/T2H

modulename: pinctrl-rzt2h.ko

configname: CONFIG_PINCTRL_RZT2H

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Renesas pinctrl drivers
└─>Device Tree and Open Firmware support
└─>pin control support for RZ/N2H and RZ/T2H
In linux kernel since version 5.10.249 (release Date: 2026-02-06)
This selects GPIO and pinctrl driver for Renesas RZ/T2H
platforms.
source code:
drivers/pinctrl/renesas/pinctrl-rzt2h.c