tests/net: Switch tx timestamp test to new net_context API

No need to build the net_pkt, just send the data directly through
net_context_sendto_new()

Use the new net_context option to enable timestamping of outgoing
packet (NET_CONTEXT_TIMESTAMP).

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2 files changed