This interface support SMU_MSG_GetDriverIfVersion
and SMU_MSG_GetSmuVersion checking.

v2: squash in driver_if changes (Alex)
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>