Marking setOemNetworkPreference as @SystemApi

Marking setOemNetworkPreference in ConnectivityManager as @SystemApi.

Bug: 176496438
Bug: 176494815
Test: atest FrameworksNetTests
atest FrameworksNetIntegrationTests
atest CtsNetTestCasesLatestSdk

Change-Id: I4681c88dc3a83f71c387b29610c33594e57cb43f
4 files changed
tree: 9ee848b5d16daf61bfa51bf2fa6cdef8a65448bb
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS