[llvm] [LLVM][Triple] Add an argument to specify canonical form to `Triple::normalize` (PR #122935)

[Sam Elliott via llvm-commits]

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@@ -366,14 +366,26 @@ class Triple {
   /// @name Normalization
   /// @{
 
+  /// Canonical form
+  enum class CanonicalForm {
+    NONE = 0,
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lenary wrote:

```suggestion
    ANY = 0,
```

This might be clearer

https://github.com/llvm/llvm-project/pull/122935