Reorganize code to handle class 2 SMS.

If card is having more than one USIM applications then because of
registering mechanism in SIMRecords.java to command interface, command
interface will hold only the last registered application registrant.
So when ever telephony received SMS_ON_SIM it will come to only
last application created not the desired application which is used
by actual phone object.
Move registering mechanism for SMS_ON_SIM to SMSDispatcher
where we can get the proper application.
CRs-fixed: 432656

Change-Id: I02616e7a2e0f0250cc27780e53a061ef49f72fd6