drm/xe/compat: stop including i915_utils.h from compat i915_drv.h

Expose the places that need i915_utils.h, and include it where needed.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/6338c8524e600e048b56c5484624cfb51ed49d1d.1753965351.git.jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>