mesh: Start protocol timer on send message in advertising bearer
mesh: Start protocol timer on send message in advertising bearer

Protocol timer was not started when sending a control message
in advertising bearer.

Signed-off-by: Michał Narajowski <5b46ef62acec420708b063e686af3c7b978f2cb3@codecoup.pl>

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