[llvm] [mlir] [MLIR] Add passthrough attribute to mlir.global (PR #154706)

[Tobias Gysi via llvm-commits]

https://github.com/gysit approved this pull request.

Thanks for the changes.

LGTM from my end.

Please wait with landing until the other reviewers had a chance to take a second look.

https://github.com/llvm/llvm-project/pull/154706