put utils/ndptool into .gitignore
put utils/ndptool into .gitignore

Signed-off-by: Jiri Pirko <1b548d10035ae428195c41f5d55eedb1437ccd8a@resnulli.us>

AGWA/libndp-debian,jpirko/libndp,sgros/MIF_libndp,AGWA/libndp-debian,jpirko/libndp,sgros/MIF_libndp