default or selected kernelversion does not have config value CONFIG_PINCTRL_RT288X.
Result is shown for kernelversion 6.9.9

RT288X pinctrl driver for RALINK/Mediatek SOCs

modulename: pinctrl-rt288x.ko

configname: CONFIG_PINCTRL_RT288X

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Ralink pinctrl drivers
└─>RT288X pinctrl driver for RALINK/Mediatek SOCs
In linux kernel since version 5.14 (release Date: 2021-08-29)  
source code: