Add latitude / longitude to devices API - bug in devices.inc.php preventing

Device API currently displays [devices][id][location], which is the snmp location. Request to add lat/lon to this, which is already present in sql in observium.devices_locations.latitutde and longitude.

This table is already left joined in a query in:
./html/api/v0/includes/devices.inc.php

.. but I don't think this is actually doing anything as the location listed is already in the devices table.

It looks like it's checking for $config['geocoding']['enable'] within the api_get_devices() function, but it's not getting $config passed so it's always a FALSE.

if config were passed via this line:

Flight::route('GET /devices', 'api_get_devices');

it would probably solve this. I'm unfamiliar with Flight::route so It wasn't straightforward to me how to pass this. I tried to change the last part of api_get_devices to api_get_devices($config) but it did not enjoy it.