Port Utility Functions from DefaultPhoneNotifier

-Move static utility functions from frameworks/opt/telephony/
 ..DefaultPhoneNotifier to a new utility class in frameworks/base

-Update TelephonyRegistry to point to the new functions.

Bug: 33414487
Test: compilation
Change-Id: I36a113cb5122569d451ec3a2dfa71d72d590fa52
2 files changed