[clang] [Clang][NFC] Move OffloadArch enum to a generic location (PR #137070)

[Joseph Huber via cfe-commits]

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@@ -97,30 +97,30 @@ static const OffloadArchToStringMap arch_names[] = {
 #undef GFX
 
 const char *OffloadArchToString(OffloadArch A) {
-  auto result = std::find_if(
-      std::begin(arch_names), std::end(arch_names),
-      [A](const OffloadArchToStringMap &map) { return A == map.arch; });
-  if (result == std::end(arch_names))
+  auto Result = std::find_if(
+      std::begin(ArchNames), std::end(ArchNames),
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jhuber6 wrote:

Extremely small nit. Should be able to use `llvm::find_if` to make this shorter.

https://github.com/llvm/llvm-project/pull/137070