Cleanup includes/defines on tun/tap code
Cleanup includes/defines on tun/tap code

Signed-off-by: Bogdan Pricope <385103c4eae27e55111df6ab7856eefb0647e14e@enea.com>
Reviewed-by: Sorin Vultureanu <64c6f728decd077990042fe7e6ea94271dcc3ede@enea.com>

OpenFastPath/ofp,TolikH/ofp,OpenFastPath/ofp,TolikH/ofp,TolikH/ofp,OpenFastPath/ofp,OpenFastPath/ofp