The bluetooth FW for the IW612 is loaded together with WiFi FW, so there
is not BT FW file as in our other products.
In order to use the BT, it is a requirement to load the WiFi FW, so
ensure that the service is started after the load of the system
modules.
https://onedigi.atlassian.net/browse/DEL-8346
Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>