tests/ieee802154_hal: use _set_trx_state where possible
tests/ieee802154_hal: use _set_trx_state where possible

jasonatran/RIOT,OlegHahm/RIOT,kYc0o/RIOT,ant9000/RIOT,kYc0o/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,miri64/RIOT,ant9000/RIOT,kaspar030/RIOT,miri64/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,ant9000/RIOT,miri64/RIOT,jasonatran/RIOT,OlegHahm/RIOT,authmillenon/RIOT,ant9000/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,kYc0o/RIOT,jasonatran/RIOT,authmillenon/RIOT,miri64/RIOT,kYc0o/RIOT,miri64/RIOT,OlegHahm/RIOT,jasonatran/RIOT,ant9000/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,kaspar030/RIOT,authmillenon/RIOT,authmillenon/RIOT,kaspar030/RIOT