[llvm] [BOLT] Add support for safe-icf (PR #116275)

[Maksim Panchenko via llvm-commits]

================
@@ -428,6 +428,9 @@ class BinaryFunction {
   /// Function order for streaming into the destination binary.
   uint32_t Index{-1U};
 
+  /// Indicates function is referenced by none-control flow instruction.
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maksfb wrote:

```suggestion
  /// Indicates function is referenced by non-control flow instruction.
```

https://github.com/llvm/llvm-project/pull/116275