Inline registerForCarrierChanges

This method is only called once in system ready and is better
inlined. This will also make followups clearer where they
start using callbacks to listen to service package updates
based on a flag.

Test: CarrierPrivilegeAuthenticatorTest
Change-Id: I39cab8ff1c71a8ba0db6d189d8a248013764b18e
1 file changed