default or selected kernelversion does not have config value CONFIG_DTB_GNUBEE2.
Result is shown for kernelversion 6.9.9

GnuBee2 3.5inch NAS

configname: CONFIG_DTB_GNUBEE2

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>GnuBee2 3.5inch NAS
In linux kernel since version 5.1 (release Date: 2019-05-05)