net: Add trace_in_lltable_lookup

Signed-off-by: Asias He <asias@cloudius-systems.com>
net: Add trace_arpresolve

Signed-off-by: Asias He <asias@cloudius-systems.com>
net: Introduce lla_lookup_fast

Signed-off-by: Asias He <asias@cloudius-systems.com>