add more quantized activation benchmarks and input sizes (#35729)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35729
* there were a few quantized activations which had implementations but not benchmarks, adds them
* adds the input sizes from `unary_tests.py` here, so we can compare fairly from fp to quantized implementations of activations
Test Plan:
```
python -m pt.qactivation_test
```
Imported from OSS
Differential Revision: D20875544
fbshipit-source-id: f55a66422233b96f0791c85b05476596d5d72b5d
