default or selected kernelversion does not have config value CONFIG_B3DFG.
Result is shown for kernelversion 5.3.17

Brontes 3d Frame Framegrabber

modulename: b3dfg.ko
configname: CONFIG_B3DFG

Linux Kernel Configuration
└─> Device Drivers
└─> Staging drivers
└─> Brontes 3d Frame Framegrabber

This driver provides support for the Brontes 3d Framegrabber
PCI card.

To compile this driver as a module, choose M here. The module
will be called b3dfg.

source code: