net: l2: openthread: Add config option to enable OpenThread CoAP api

There was no way to use Openthread CoAP api in zephyr application so
far. These changes enable the feature. Now you can fully use CoAP
communication in an application working in Thread network.

Signed-off-by: Lukasz Maciejonczyk <Lukasz.Maciejonczyk@nordicsemi.no>
2 files changed