drm/xe/display: reduce includes in compat i915_drv.h

Remove some unnecessary includes, and replace xe_device.h with the
sufficient xe_device_types.h.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ada73d5e3565b1cc284405386a16cc74d79bbb05.1717004739.git.jani.nikula@intel.com