onnxruntime

NNAPI EP Update (#1483)

* Update DNNLibrary

* Allow fp16 by default

* Add nnapi build in ci

* Fix nnapi ep after #1268

* Remove unused variables

* Support nnapi in onnx_test_runner

* Update DNNLibrary to fix tests

* Update build.py for android build support, solve conflict of
tools/ci_build/build.py

* Support non-ARM Android build, solve conflict of tools/ci_build/build.py

* Enable android test by x86_64 android emulator

* Add dnnlibrary/NNAPI support in build.py

* suppress the verbose adb output

* Remove debug logs

* Install cmake by pip

* Fix undefined host_protoc_path

* cmake==3.13.2 in pypi is actually 3.12.2, so install 3.13.2.post1 instead

* Fix Android ARM64 build

* Use android ndk r20 instead of r19c, fix conflicts in install_deps_android.sh