Added GetActiveSubscriptionInfo support am: df049d7a44 am: ae0936bad7

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/2472912

Change-Id: I880a6ce4b67c4fd4c46f51255dccdbfd09066049
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>