Revert "Revert "[Telephony Mainline] To mark @hide for mainline ..."

Revert "Revert "[Telephony Mainline] To mark @hide for mainline ..."

Revert submission 10702401-revert-10665971-TML_revertSystemApi-ZNISIHWMFP

Reason for revert: Fixing build by make framework-telephony-stubs-srcs-update-current-api (new txt file has been added for telephony)
Reverted Changes:
I5a320c062:Revert "[Telephony Mainline] To mark @hide for mai...
I0e762e0dd:Revert "[Telephony Mainline] To mark @hide for mai...

Test: make
Bug:151896160

Change-Id: I6f22488aca8f2059d9fb4be48116edc52856a393