[clang] [clang][deps] Improve timing output (PR #113726)

[Ben Langmuir via cfe-commits]

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@@ -88,6 +88,7 @@ static bool DeprecatedDriverCommand;
 static ResourceDirRecipeKind ResourceDirRecipe;
 static bool Verbose;
 static bool PrintTiming;
+static bool NoPrintTimingHeader;
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benlangmuir wrote:

Nit: even if the command-line argument is "-no" I would phrase this as `PrintTimingHeader` with default `true`.

https://github.com/llvm/llvm-project/pull/113726