[Buildroot] Buildroot customizations as a git submodule?

[Daniel Nyström]

How do you folks on this mailing list manage your customizations on Buildroot?

I was thinking maybe I could keep all my customizations as a git
submodule residing in board/<company>/<project>?

Can I add new software packages without touching the original BR
source files or directories? How about defconfigs?

It would be really awesome if this could be achieved so one did not
have to make changes to BR at all.

Thoughts or comments anyone?