[llvm] [Offload] Add `MAX_WORK_GROUP_SIZE` device info query (PR #143718)

[Ross Brunton via llvm-commits]

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@@ -228,16 +228,13 @@ Error olGetDeviceInfoImplDetail(ol_device_handle_t Device,
   ReturnHelper ReturnValue(PropSize, PropValue, PropSizeRet);
 
   // Find the info if it exists under any of the given names
-  auto GetInfo = [&](std::vector<std::string> Names) {
-    InfoQueueTy DevInfo;
-    if (Device == HostDevice())
-      return std::string("Host");
-
+  auto FindInfo = [&](InfoQueueTy &DevInfo, llvm::SmallVector<StringRef> &Names)
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RossBrunton wrote:

It's not; it's a list of basically-strings with nesting.

It's a mess, and both me and Callum want to improve it in some way.

https://github.com/llvm/llvm-project/pull/143718