Fix always return first package for mock location app in developer options.

The mock location app should be OP_MOCK_LOCATION allowed app, the packageOps.get(0).getPackageName()
is the first app that used the OP_MOCK_LOCATION in history, but maybe rejected.

Change-Id: I0158436dd7d2790f4e9640075bc9c8bd3422f467
1 file changed