Compile ArmNN shim over the support library This change adds the SELinux permissions for the new ArmNN AIDL backend based on a shim over the NNAPI Support Library. Test: Local run of CtsNNAPITestCases Test: Local run of VtsHalNeuralnetworksTargetTest Test: Local run of MLTS Benchmark Bug: 283724775 Merged-In: I24b69c4f6d65f45ec6935744717b66bed14cb236 Change-Id: Ie834e6f23ad5983ad48f52714373c3c7da2ad236