add new function to provide neighbour event parsing

the neighbour parsing function was previously not accessible, so
custom callback functions had to handle the decoding itself.
rtnl_neigh_parse is introduced and implemented in much the same way
as rtnl_route_parse.

Signed-off-by: Brett Ciphery <brett.ciphery@windriver.com>
Signed-off-by: Thomas Graf <tgraf@redhat.com>
2 files changed