drm/xe: xe_engine_create_ioctl should check gt_count, not tile_count

Platforms like MTL only have a single tile, but multiple GTs.
Ensure XE_ENGINE_CREATE accepts engine creation on gt1 on such
platforms.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230725003433.1992137-4-matthew.d.roper@intel.comSigned-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_engine.c

@@ -416,7 +416,7 @@ find_hw_engine(struct xe_device *xe,
 	if (eci.engine_class > ARRAY_SIZE(user_to_xe_engine_class))
 		return NULL;
 
-	if (eci.gt_id >= xe->info.tile_count)
+	if (eci.gt_id >= xe->info.gt_count)
 		return NULL;
 
 	idx = array_index_nospec(eci.engine_class,
@@ -539,7 +539,7 @@ int xe_engine_create_ioctl(struct drm_device *dev, void *data,
 	if (XE_IOCTL_DBG(xe, err))
 		return -EFAULT;
 
-	if (XE_IOCTL_DBG(xe, eci[0].gt_id >= xe->info.tile_count))
+	if (XE_IOCTL_DBG(xe, eci[0].gt_id >= xe->info.gt_count))
 		return -EINVAL;
 
 	if (eci[0].engine_class == DRM_XE_ENGINE_CLASS_VM_BIND) {