default or selected kernelversion does not have config value CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A.
Result is shown for kernelversion 6.9-rc7

Boe TH101MB31UIG002-28A panel

modulename: panel-boe-th101mb31ig002-28a.ko

configname: CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Panels
└─>Device Tree and Open Firmware support
└─>Boe TH101MB31UIG002-28A panel
In linux kernel since version 6.1.89 (release Date: 2024-04-29)  
Say Y here if you want to enable support for Boe
TH101MB31UIG002-28A TFT-LCD modules. The panel has a 800x1280
resolution and uses 24 bit RGB per pixel. It provides a MIPI DSI
interface to the host and has a built-in LED backlight.

source code: