Run networking tests for native_posix, qemu_x86 and qemu_cortex_m3
platforms only as the tests are generic enough so no need to run
them in real physical device.
Fixes#9623#9614#9622#9621#9618
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Test that Tx timestamp callback code is called properly if network
packet timestamping is enabled.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
