CatService: OPEN_CHANNEL p-cmd to send event confirmation and not T.R

Upon handling OPEN_CHANNEL command, send User confirmation instead of
terminal response as lower layers expect confirmation information.

Bug: 10602211
Change-Id: I99ee5210ff345660559d1656e80c6ab8b0991d8e
Merge "CatService: OPEN_CHANNEL p-cmd to send event confirmation and not T.R"
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.

Change-Id: Ia60900cb014c4669d05d3cf0a2d2309899440106
Merge "Telephony: Fix incorrect status display on UI in airplane mode"
Telephony: Handle RIL_UNSOL_EXIT_EMERGENCY_CALLBACK_MODE

Handle RIL_UNSOL_EXIT_EMERGENCY_CALLBACK_MODE as a way to exit from
Emergency Callback Mode

Bug: 10749583
Change-Id: Ia572ac5a4d5ab38166453dcdf26fb0a667bba74e
Merge "Telephony: Handle RIL_UNSOL_EXIT_EMERGENCY_CALLBACK_MODE"
Merge remote-tracking branch 'aosp/master' into cm-10.2