Add getLocationFlags getter to PackageManagerNative.

This information is required for enforcing NNAPI Vendor Extensions
restrictions in libneuralnetworks.so library.

What it does is already possible using ApplicationInfo, but in native code
there's no equivalent to platform private (non-exposed public), because of
that I had to create getLocationFlags as an explicit API.

Bug: 120483623
Test: CtsNNAPITestCases

Change-Id: I0b3a5a4f3559b2d1d44088c8fa1d5bb5605c83cb
1 file changed