[clang] [OpenACC][CIR] Implement 'device_type' clause lowering for 'init'/'sh… (PR #135102)

[Andy Kaylor via cfe-commits]

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@@ -57,31 +75,90 @@ class OpenACCClauseCIREmitter final
     }
   }
 
+  mlir::acc::DeviceType decodeDeviceType(const IdentifierInfo *II) {
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andykaylor wrote:

```suggestion
  mlir::acc::DeviceType decodeDeviceType(const IdentifierInfo *ii) {
```
I don't think we make exceptions for acronyms.

https://github.com/llvm/llvm-project/pull/135102