service: move set initial idle state to r_on_bus_aquired
service: move set initial idle state to r_on_bus_aquired

g_bus_own_name is an async call, we can't immediatley set the idle state
afterwards since we potentially haven't aquired the bus yet. Move it into
r_on_bus_aquired to set it before exporting to the objects to the bus.

Signed-off-by: Rouven Czerwinski  <76cf81876f6bd9c36f3e19bf926d3e7bc1d0dc80@pengutronix.de>

rauc/rauc,rauc/rauc,rauc/rauc,ejoerns/rauc,jluebbe/rauc,jluebbe/rauc,ejoerns/rauc,jluebbe/rauc,ejoerns/rauc