[llvm] [BOLT][NFC] Clarify requirement of PLTCall pass (PR #164280)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- bolt/lib/Passes/PLTCall.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/bolt/lib/Passes/PLTCall.cpp b/bolt/lib/Passes/PLTCall.cpp
index db0e8f93f..18e17bd15 100644
--- a/bolt/lib/Passes/PLTCall.cpp
+++ b/bolt/lib/Passes/PLTCall.cpp
@@ -22,16 +22,17 @@ namespace opts {
 
 extern cl::OptionCategory BoltOptCategory;
 
-static cl::opt<bolt::PLTCall::OptType>
-    PLT("plt", cl::desc("optimize PLT calls (sets DF_BIND_NOW/DF_1_NOW in the output binary)"),
-        cl::init(bolt::PLTCall::OT_NONE),
-        cl::values(clEnumValN(bolt::PLTCall::OT_NONE, "none",
-                              "do not optimize PLT calls"),
-                   clEnumValN(bolt::PLTCall::OT_HOT, "hot",
-                              "optimize executed (hot) PLT calls"),
-                   clEnumValN(bolt::PLTCall::OT_ALL, "all",
-                              "optimize all PLT calls")),
-        cl::ZeroOrMore, cl::cat(BoltOptCategory));
+static cl::opt<bolt::PLTCall::OptType> PLT(
+    "plt",
+    cl::desc(
+        "optimize PLT calls (sets DF_BIND_NOW/DF_1_NOW in the output binary)"),
+    cl::init(bolt::PLTCall::OT_NONE),
+    cl::values(
+        clEnumValN(bolt::PLTCall::OT_NONE, "none", "do not optimize PLT calls"),
+        clEnumValN(bolt::PLTCall::OT_HOT, "hot",
+                   "optimize executed (hot) PLT calls"),
+        clEnumValN(bolt::PLTCall::OT_ALL, "all", "optimize all PLT calls")),
+    cl::ZeroOrMore, cl::cat(BoltOptCategory));
 }
 
 namespace llvm {

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https://github.com/llvm/llvm-project/pull/164280