[mlir][gpu] Deprecate gpu::Serialization* passes. (#65857)

Deprecate the `gpu-to-cubin` & `gpu-to-hsaco` passes in favor of the
`TargetAttr` workflow. This patch removes remaining upstream uses of the
aforementioned passes, including the option to use them in `mlir-opt`. A
future patch will remove these passes entirely.

The passes can be re-enabled in `mlir-opt` by adding the CMake flag: `-DMLIR_ENABLE_DEPRECATED_GPU_SERIALIZATION=1`.