default or selected kernelversion does not have config value CONFIG_DRM_MSM_FBDEV.
Result is shown for kernelversion 6.5.1

Enable legacy fbdev support for MSM modesetting driver

configname: CONFIG_DRM_MSM_FBDEV

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Enable legacy fbdev support for MSM modesetting driver
In linux kernel since version 3.12 (release Date: 2013-11-03)  
Choose this option if you have a need for the legacy fbdev
support. Note that this support also provide the linux console
support on top of the MSM modesetting driver.