Implement service pin1StatusQuery API method

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <morphis@gravedo.de>
ofono: implement pin1StatusQuery API method

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <morphis@gravedo.de>
ofono: forward power status changes to subscribers

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <morphis@gravedo.de>
Implement service functionality to report SIM status updates

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <morphis@gravedo.de>