[llvm] [Offload] Add a stub unloadBinaryImpl for host device (PR #145716)

[Joseph Huber via llvm-commits]

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@@ -147,6 +147,12 @@ struct GenELF64DeviceTy : public GenericDeviceTy {
   /// Initialize the device, which is a no-op
   Error initImpl(GenericPluginTy &Plugin) override { return Plugin::success(); }
 
+  /// Unload the binary image
+  ///
+  /// TODO: This currently does nothing, and should be implemented as part of
+  /// broader memory handling logic for this plugin
+  Error unloadBinaryImpl(DeviceImageTy *) override { return Plugin::success(); }
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jhuber6 wrote:

Sure, though honestly there's probably a lot that needs to be fixed about this plugin.

https://github.com/llvm/llvm-project/pull/145716