Some L2 layers such as bluetooth need to have extra buffer pools to
hold copies of packets for use with TCP. Let's add support for that
so that future enablement of other boards won't get bitten.
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Let's remove all of the extra coding to handle DHCP, DNS and event
management. This is all handled by the net_app API.
Signed-off-by: Michael Scott <michael.scott@linaro.org>