[SQUASH ME] Fix Random option macro
[SQUASH ME] basic_net: Make basic_net_send_data() an inline function
[SQUASH ME] unittests: Fix random option macro
[SQUASH ME] net_dev_dummy: Return transmitted bytes in _send_data
[SQUASH ME] unittests: fix for previous change
Merge branch 'net-dev-base' into network-layer-interface
[SQUASH ME] unittests: Finish BASIC_NET_CMD_SND tests