[llvm] [Offload] Add device UID (PR #164391)

[Robert Imschweiler via llvm-commits]

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@@ -544,6 +545,8 @@ Error olGetDeviceInfoImplDetailHost(ol_device_handle_t Device,
     return Info.writeString("Virtual Host Device");
   case OL_DEVICE_INFO_PRODUCT_NAME:
     return Info.writeString("Virtual Host Device");
+  case OL_DEVICE_INFO_UID:
+    return Info.writeString(GenericDeviceTy::getHostDeviceUid());
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ro-i wrote:

So that I don't have to hardcode it :)

https://github.com/llvm/llvm-project/pull/164391