Fix RIL_UNSOL_CDMA_PRL_CHANGED constant typo (2/2)

Change-Id: If3ff32a3974368d9ea2756d3d9a22d4713e704fa
SamsungQualcommRIL: Add Operators class

* for replacing operator numbers with operator name
* prevent race condition when the two response  colided

Change-Id: Ia5add56b0c79847a70487223006bb33e2730a165