Revert "Mainline: remove usage of hiddepn API SubscriptionManager#getPhoneId"

This reverts commit 06fa0d40.

Reason for revert: Droidcop-triggered revert due to breakage
  https://android-build.googleplex.com/builds/tests/view?testResultId=TR89003613757878243&invocationId=I15600002582842701,
  bug b/146320192

Bug: 146320192


Change-Id: I173a9f0dbedeeef323d1715e05582aa8960d2fba