drm/xe: Use for_each_remote_tile rather than manual check

Replace for_each_tile plus a check against primary tile with
for_each_remote_tile in tiles_fini. The latter macro does this for us.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240816040208.62695-1-matthew.brost@intel.comSigned-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

drivers/gpu/drm/xe/xe_mmio.c

@@ -29,8 +29,7 @@ static void tiles_fini(void *arg)
 	struct xe_tile *tile;
 	int id;
 
-	for_each_tile(tile, xe, id)
-		if (tile != xe_device_get_root_tile(xe))
+	for_each_remote_tile(tile, xe, id)
 		tile->mmio.regs = NULL;
 }