fsogsmd: dbus_service: GetSignalStrength requires being registered
fsogsmd: dbus_service: GetSignalStrength requires being registered

On nokia900 it would segfault otherwise due to the network subsystem
not being reachable yet. And without being registered it does not make
sense anyway.

Signed-off-by: Klaus Kurzmann <c477880af38a6ff08996eb4cfb8b89c9ead729de@fluxnetz.de>

slyon/debian-fso-usaged,slyon/debian-fso-usaged,slyon/debian-fso-deviced,slyon/debian-libfsoframework,slyon/debian-fso-deviced,slyon/debian-libfsoframework