Add API to get Subscription Id

Bug: 172867224
Test: atest android.net.wifi
Change-Id: I0534a71784060f1613b0b76602e9ed379ab3104e
3 files changed
tree: 5095e0e92a7cade24cebfbb5f421c1983b6014a4
  1. framework/
  2. OsuLogin/
  3. OWNERS