[llvm] [Offload] Don't check in generated files (PR #141982)

[Callum Fare via llvm-commits]

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@@ -19,9 +22,9 @@ if(LLVM_HAVE_LINK_VERSION_SCRIPT)
 endif()
 
 target_include_directories(LLVMOffload PUBLIC
+                            ${CMAKE_CURRENT_BINARY_DIR}/API
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callumfare wrote:

Although I do wonder if it should be getting the dependency on the shared header from the plugins themselves rather than libomptarget

https://github.com/llvm/llvm-project/pull/141982