sources: add kmod to the sources
    
    Either we will build kmod in this package, or in udev but it makes
    more sense to build it here (one ready) with the --disable-tools
    and then turn the tools replacements on once they are good too.
    
    (this commit only adds the sources, not ready to build yet)
    
    Signed-off-by: Jon Masters <jcm@jonmasters.org>