Add driver back to Kernel Image

I am currently attempting to begin my journey with Enterprise Storage Operating System (ESOS-Project), but I am trying to add back in the Non-Transparent Bridge module found in the default linux kernel.

Unfortunately, my experience with compiling kernel modules, etc. is still extremely rough, and I cant seem to get this to work.

Any Idea how I can merge these two together? Both are created by checking out git repos.

Currently using Ubuntu Server 21.04 (GNU/Linux 5.11.0-36-generic x86_64) as my OS to compile the modules.