[nnc] llvm_codegen quantization types for vectype (#68736)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/68736
Test Plan: Imported from OSS
Reviewed By: ZolotukhinM
Differential Revision: D32596261
Pulled By: IvanKobzarev
fbshipit-source-id: 0388c3b5ae58eb16921d25d9a784f82f1bb924fc
