[clang] [Clang][ARM][AArch64] Add branch protection attributes to the defaults. (PR #83277)

[via cfe-commits]

================
@@ -2022,6 +2022,19 @@ static void getTrivialDefaultFunctionAttributes(
     std::tie(Var, Value) = Attr.split('=');
     FuncAttrs.addAttribute(Var, Value);
   }
+
+  TargetInfo::BranchProtectionInfo BPI(LangOpts);
+
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DanielKristofKiss wrote:

after #82819 lands, this can be 2 lines
```suggestion
TargetInfo::BranchProtectionInfo BPI(LangOpts);
BPI.setFnAttributes(FuncAttrs);
```

https://github.com/llvm/llvm-project/pull/83277