[clang] [Driver] Add -mbranch-protection to ARM and AArch64 multilib flags (PR #106391)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff 96e1320a9aa8fd010b02fc6751da801c48725a02 b3d7b528a422f7c44b535c480acbd74f03555b4d --extensions c,cpp -- clang/lib/Driver/ToolChain.cpp clang/test/Driver/print-multi-selection-flags.c
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 442512366c..76901875c6 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -222,7 +222,8 @@ static void getAArch64MultilibFlags(const Driver &D,
   MArch.insert(MArch.begin(), ("-march=" + ArchName).str());
   Result.push_back(llvm::join(MArch, "+"));
 
-  const Arg *BranchProtectionArg = Args.getLastArgNoClaim(options::OPT_mbranch_protection_EQ);
+  const Arg *BranchProtectionArg =
+      Args.getLastArgNoClaim(options::OPT_mbranch_protection_EQ);
   if (BranchProtectionArg) {
     Result.push_back(BranchProtectionArg->getAsString(Args));
   }
@@ -274,7 +275,8 @@ static void getARMMultilibFlags(const Driver &D,
     llvm_unreachable("Invalid float ABI");
   }
 
-  const Arg *BranchProtectionArg = Args.getLastArgNoClaim(options::OPT_mbranch_protection_EQ);
+  const Arg *BranchProtectionArg =
+      Args.getLastArgNoClaim(options::OPT_mbranch_protection_EQ);
   if (BranchProtectionArg) {
     Result.push_back(BranchProtectionArg->getAsString(Args));
   }

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https://github.com/llvm/llvm-project/pull/106391