Expose TelephonyManager CDMA ERI APIs as sysetm APIs

1) TelephonyManager.getCdmaEriInformation()
2) Introduce new class CdmaEriInformation

Bug: 147839123
Test: Basic telephony testing
      atest frameworks/base/packages/SystemUI/tests
Change-Id: I2a4938ae07494a62c67bdcf881f4944823e7dced