lib: Correct object file dependencies

lib: Correct object file dependencies

Neither internal libnetlink nor libgenl depends on ll_map.o: prepare for
upcoming changes that brings much more cleaner dependency between
utils.o and ll_map.o.

However ll_map.o depends on libnetlink.o functions so we need to provide
libnetlink.a after libutil.a in LIBNETLINK at global Makefile.

Tested using make clean && make -j4. No problems so far.

Signed-off-by: Serhey Popovych <serhe.popovych@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>