Ignore rest of outputs of LayerNorm when lowering to Glow (#35338)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35338
Pull Request resolved: https://github.com/pytorch/glow/pull/4343
- Ignore rest of outputs of layoutNorm
- Support implicit broadcast when loading basic binary ops from Glow.
Test Plan:
```
buck test glow/fb/test:test_onnxifinnpi -- test_layernorm_mul --print-passing-details
```
Reviewed By: jfix71
Differential Revision: D20627768
fbshipit-source-id: 30ae8a2f590452f0b354d413ae2c5ec46a4a77d8
