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

[Callum Fare via llvm-commits]

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@@ -32,6 +32,8 @@ function(add_target_library target_name lib_name)
 
     NO_INSTALL_RPATH
     BUILDTREE_ONLY
+
+    DEPENDS LibomptargetOffloadErrcodes
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callumfare wrote:

I've moved it to be part of the plugin interface and tidied up the dependencies, I think it makes a lot more sense now

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