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

Silicom BypassCTL library support

modulename: bypass.ko

configname: CONFIG_SBYPASS

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Silicom BypassCTL library support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
If you have a network (Ethernet) controller of this type, say Y

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

source code:

is depended by
CONFIG_BPCTL