default or selected kernelversion does not have config value CONFIG_DRM_ST7586.
Result is shown for kernelversion 6.16-rc7

DRM support for Sitronix ST7586 display panels

modulename: st7586.ko

configname: CONFIG_DRM_ST7586

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>SPI support
└─>DRM support for Sitronix ST7586 display panels
In linux kernel since version 6.1.145 (release Date: 2025-07-14)  
DRM driver for the following Sitronix ST7586 panels:
* LEGO MINDSTORMS EV3

If M is selected the module will be called st7586.

source code: