hardware.py: get network info over dbus (#2727)
hardware.py: get network info over dbus (#2727)

* Get network stuff using dbus

* most people would call EDGE 2G

* Small cleanup
commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot,commaai/openpilot