[SCEV] Use m_scev_Mul in a few more places. (NFC)#163364

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

fhahn:scev-use-more-mul-urem-patternfhahn/llvm-project:scev-use-more-mul-urem-patternCopy head branch name to clipboard