NetworkStatsService - add void nativeRegisterIface(iface) am: bfb3a3c5b4 am: 57240ee594

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2924886

Change-Id: Id14ca32a56042d44614bae1fd6547237c1a08a4f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>