[clang] [llvm] [PowerPC] add TargetParser for PPC target (PR #97541)

[David Tenty via cfe-commits]

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@@ -1963,8 +1964,11 @@ void Clang::AddPPCTargetArgs(const ArgList &Args,
   const llvm::Triple &T = getToolChain().getTriple();
   if (Args.getLastArg(options::OPT_mtune_EQ)) {
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daltenty wrote:

See below:
```suggestion
  if (Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
```

https://github.com/llvm/llvm-project/pull/97541