Telephony: Fix incorrect status display on UI in airplane mode

UI should display "No Service" instead of "Searching for Service" in airplane
 mode. Changes done to set ERI text to "Searching for Service" only when
 radio is on.
 Ported from AOSP.
Change-Id: Ic7cc7b140c07103810789a17b21605903fb90541
PhoneFactory: Block radio init if the device's custom class can't be used

Trap the initialization process in a 10 second error loop. The device
will be normally usable, and have a dead radio. The radio log buffer
will have the full stack dump explaining what went wrong during the
custom class instantiation

Change-Id: Id47d51737a9fb78e6d43a179ba304b1ba03c4219
GsmSST: Disregard any invalid verbose values for timezones in NITZ requests

And assume anything resulting in "GMT" is invalid, since that's the
default value returned by libcore

Change-Id: I361650400e71976d8327ee3929947ca26a9eff57
(cherry picked from commit f440bcd71fe735872b7e4c7ecd557503a79df756)