Be sure that on charger disconnect the usb connection is not set

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Make sure that we do not redo all the mode setting stuff (and a disconnect
in between) when a mode is set. Avoids disconnects when the devicelock status
changes.

[usb-moded] No disconnects between devicelock status changes

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>