[clang] [HLSL] Add "or" intrinsic (PR #128979)

[Ashley Coleman via cfe-commits]

================
@@ -290,6 +290,28 @@ _HLSL_BUILTIN_ALIAS(__builtin_hlsl_and)
 bool4 and(bool4 x, bool4 y);
 // clang-format on
 
+//===----------------------------------------------------------------------===//
+// or builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn bool or(bool x, bbol y)
----------------
V-FEXrt wrote:

```suggestion
/// \fn bool or(bool x, bool y)
```

https://github.com/llvm/llvm-project/pull/128979