Merge changes I2385e29b,I308e2632,I2deb19d6

* changes:
  SupplicantStaNetworkHal: Load network ID
  SupplicantStaIfaceHal: Expose public methods
  SupplicantHal: Use the new NativeUtil methods
tree: 04d46a00c846cac28f2268f544f46c4dcf911f6c
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/
  5. PREUPLOAD.cfg