Introduce NNAPI feature level 6.

Add the following changes to  NNAPI feature level 6.
- Add BATCH_MATMUL operation
- Support TENSOR_INT32 for RESHAPE operation

Also use android.hardware.neuralnetworks-V2-ndk since AIDL v1 has been
frozen.

Cherrypicked from Id82ec8f30ef1972c324f33b6d227c650e0a7d7b0.

Bug: 193012662
Bug: 200281183
Test: NeuralNetworksTest_static,VtsHalNeuralnetworksTargetTest
Change-Id: Id82ec8f30ef1972c324f33b6d227c650e0a7d7b0
Merged-In: Id82ec8f30ef1972c324f33b6d227c650e0a7d7b0
43 files changed