Telephony(MSIM): MultiSim support for PIN/PUK & Operator Name.

-> Add CarrierText, SimPinView and SimPukView classes for MSIM.
-> Add support to Display Multiple operator name.
-> Add Support for Multiple PIN/PUK Lock screens.
-> Overload few Keyguard methods to take sub info.

Change-Id: I500129a5dc09adcb2cd8eb664d30ae2e8bad2642

Conflicts:
	core/res/res/values/symbols.xml