drm/xe/compat: remove intel_step_name macro
As there are no more compat users left for intel_step_name(), remove the
macro and use the more direct include for the enumerations.
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://patch.msgid.link/816e3f6dda0a112392e8f8ccff820a81aff63f32.1773663208.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>