[clang] [NFC][Clang] Move set functions out BranchProtectionInfo. (PR #98451)

[Daniel Kiss via cfe-commits]

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@@ -413,6 +414,12 @@ class TargetCodeGenInfo {
     return nullptr;
   }
 
+  void setFnAttributes(const TargetInfo::BranchProtectionInfo &BPI,
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DanielKristofKiss wrote:

agree, added.

https://github.com/llvm/llvm-project/pull/98451