mesh: Start protocol timer on send message in advertising bearer
Protocol timer was not started when sending a control message
in advertising bearer.
this is port of
@@ -588,6 +588,7 @@ static int bearer_ctl_send(u8_t op, const void *data, u8_t data_len,
BT_DBG("op 0x%02x data_len %u", op, data_len);
prov_clear_tx();
+ k_delayed_work_submit(&link.prot_timer, PROTOCOL_TIMEOUT);
buf = adv_buf_create(reliable ? RETRANSMITS_RELIABLE :
RETRANSMITS_UNRELIABLE);
