[NFC][X86] Correct Zen4 Scheduling (Part 1/2: Rename "19h" to "Zen4")#131615

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

bubblepipe:znver4-19h-renamebubblepipe/llvm-project:znver4-19h-renameCopy head branch name to clipboard