Integrate custom header in MLIR

I have a custom MLIR dialect for my hardware to lower small Deep Learning models using ONNX.

Is there a way to integrate header and its associated libraries in MLIR? Header contains target related data structures which are essential.

I am able to include above header in LLVM IR but it would really help if I get those and stitch during MLIR Lowering. Has anyone did this before? Any pointers would be helpful.