default or selected kernelversion does not have config value CONFIG_OF_VIDEOMODE.
Result is shown for kernelversion 5.4.159
Enable device tree videomode support
modulename: of_videomode.ko
configname: CONFIG_OF_VIDEOMODE
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Enable device tree videomode support
In linux kernel since version 3.9 (release Date: 2013-04-28)
helper to get videomodes from the devicetree