[usb-moded] Skip second devicelock check of we go to charging only. Fixes: JB#17241

When the device is locked the second devicelock check will not allow to set
the charging mode. This will cause either malfunctions in charging, or
force the charging chip to fall back to dedicated charger mode.
In either case this will fail to bring up the correct mode afterwards.

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