CONFIG_PINCTRL_MCP23S08_SPI (not configurable)

modulename: pinctrl-mcp23s08_spi.ko

configname: CONFIG_PINCTRL_MCP23S08_SPI

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>PINCTRL_MCP23S08_SPI
In linux kernel since version 5.1 (release Date: 2019-05-05)  
source code:
drivers/pinctrl/pinctrl-mcp23s08_spi.c

depends
CONFIG_PINCTRL