[llvm] [CMake] Enable new policy for CMAKE_MSVC_DEBUG_INFORMATION_FORMAT (PR #82371)

[Dave Abrahams via llvm-commits]

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@@ -10,3 +10,17 @@ endif()
 if(POLICY CMP0116)
   cmake_policy(SET CMP0116 OLD)
 endif()
+
++# Enable debug info compatible with SCCache
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dabrahams wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/82371