[mlir] Move vector.{to_elements,from_elements} unrolling to `VectorUnroll.cpp`#159118

amd-eochoalo merged 13 commits intollvm:mainllvm/llvm-project:mainfrom

amd-eochoalo:eochoa/2025-09-16/unroll-to-from-elementsamd-eochoalo/llvm-project:eochoa/2025-09-16/unroll-to-from-elementsCopy head branch name to clipboard