Merge changes from topic "nnapi-cherrypick-from-master-and-pi-dev-to-aosp"
* changes:
Generate VTS tests for SPLIT
Add new SPLIT op
Add new op EXPAND_DIMS
Add negative axis support to ARGMAX and ARGMIN
Updates LSHProjectionTest for ag/4982589.
Add 1.2 ops to utility functions
Fix typo in ARGMAX doc
Fix VTS tests using shared memory.
Update OWNERS
Regenerate PAD_V2 tests with new test generator.
Add new op PAD_V2
Updates LSH_PROJECTION to match change in tflite.
Reserve enums for new NNAPI ops.
README doc on test generator usage.
Modify test generators to accept a directory of spec files.
Introduce implicit conversion to test generator.
Add auto model variation to test generator.
Update benchmark app/package name
Regenerate test codes with the new test generator.
Refactor test_generator to allow multiple models per spec file.
Add new ops ARGMAX and ARGMIN
Adds .clang-format for Android Framework Style.
