default or selected kernelversion does not have config value CONFIG_FB_CYBER.
Result is shown for kernelversion 5.15.113

Amiga CyberVision 64 support

modulename: cyberfb.ko

configname: CONFIG_FB_CYBER

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Amiga CyberVision 64 support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This enables support for the Cybervision 64 graphics card from
Phase5. Please note that its use is not all that intuitive (i.e. if
you have any questions, be sure to ask!). Say N unless you have a
Cybervision 64 or plan to get one before you next recompile the
kernel. Please note that this driver DOES NOT support the
Cybervision 64/3D card, as they use incompatible video chips.

source code: