net: openthread: propagate security and header updated flags
net: openthread: propagate security and header updated flags

When transmitting a frame, inform the radio driver whether
security processing and/or header updates are needed or not.

When a frame was transmitted, inform back to OpenThread whether
the security procedure and/or header updates were completed for
the frame or not.

Signed-off-by: Eduardo Montoya <c6d924925ebf82d772472f7877e771cedf439387@nordicsemi.no>

zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr