iproute2: cleanup dependencies

LIBNETLINK will be defined in the main Makefile, so
both ../lib/libnetlink.a ../lib/libutil.a will be
automatically appended during linking. Otherwise
../lib/libnetlink.a ../lib/libutil.a will appear
twice during linking.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
3 files changed