default or selected kernelversion does not have config value CONFIG_PINCTRL_AB9540.
Result is shown for kernelversion 6.7-rc3

AB9540 pin controller driver

modulename: pinctrl-ab9540.ko

configname: CONFIG_PINCTRL_AB9540

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>AB9540 pin controller driver
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/pinctrl/nomadik/pinctrl-ab9540.c