pytorch

b93823cb - Per-channel quantized tensor to have only a single axis (#26675)

Per-channel quantized tensor to have only a single axis (#26675) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/26675 Based on offline poll, we're very unlikely to have multi-axis quantized tensors in the foreseeable future. Let's simplify API and just return int instead of list. It also matches the singular `axis` name. Test Plan: Imported from OSS Differential Revision: D17537052 Pulled By: dzhulgakov fbshipit-source-id: 676abc3b251d288468aaed467b5e5ca4063b98b0