quantize_linear_per_channel -> quantize_per_channel (#26575)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26575
To keep consistent with `quantize_per_tensor` we also
rename `quantize_linear_per_channel` to `quantize_per_channel`
Test Plan:
ci
Imported from OSS
Differential Revision: D17517360
fbshipit-source-id: 3af7d8f0fbe99148b79fcb1ad2fe811f776590cd