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

Support device tree blobs using TI LCDC Slave binding

modulename: tilcdc_slave_compat.ko

configname: CONFIG_DRM_TILCDC_SLAVE_COMPAT

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Support device tree blobs using TI LCDC Slave binding
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Choose this option if you need a kernel that is compatible
with device tree blobs using the obsolete "ti,tilcdc,slave"
binding. If you find "ti,tilcdc,slave"-string from your DTB,
you probably need this. Otherwise you do not.

source code:
drivers/gpu/drm//tilcdc/