[MIPS] Reland Add FeatureMSA to i6400 and i6500 cores (#134985)#141730

brad0 merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

mgoudar:reland-mips-msa-feature-to-i6500mgoudar/llvm-project:reland-mips-msa-feature-to-i6500Copy head branch name to clipboard