[AArch64][llvm] Armv9.7-A: Add support for FEAT_CMH and FEAT_LSCP#163155

jthackray merged 3 commits intomainllvm/llvm-project:mainfrom

users/jthackray/armv9.7a-feat_lscp_cmhllvm/llvm-project:users/jthackray/armv9.7a-feat_lscp_cmhCopy head branch name to clipboard