[llvm] [CodingStandard] Require Unix line endings for all source files (PR #161228)

[James Henderson via llvm-commits]

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@@ -1790,6 +1790,12 @@ would help to avoid running into a "dangling else" situation.
       markAsIgnored(D);
   }
 
+Use Unix line endings for source files
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jh7370 wrote:

Perhaps worth dropping "source" from here and the first sentence below, since that to me implies specifically .cpp and .h files still.

https://github.com/llvm/llvm-project/pull/161228