[libc] Refactor internal auxv usage to reduce getauxval dependencies#162489

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

SchrodingerZhu:libc-remove-getauxval-entrypoint-depsSchrodingerZhu/llvm-project:libc-remove-getauxval-entrypoint-depsCopy head branch name to clipboard