[mlir][AMDGPU] Set ABI version constant when linking device libs

Currently, linking the device libraries requires setting a constant
that indicates the code object ABI version the compilation is
targeting.

This fixes the MLIR linking process by setting this constant to 400,
which is the value corresponding to the current code object ABI
default, version 4.

Reviewed By: Mogball

Differential Revision: https://reviews.llvm.org/D126913