drm/xe: Add sysfs entry for tile

We have recently introduced tile for each gpu,
so lets add sysfs entry per tile for userspace
to provide required information specific to tile.

V5:
  - define ktype as const
V4:
  - Reorder headers - Aravind
V3:
  - Make API to return void and add drm_warn - Aravind
V2:
  - Add logs in failure path

Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_tile_sysfs.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_TILE_SYSFS_H_
+#define _XE_TILE_SYSFS_H_
+
+#include "xe_tile_sysfs_types.h"
+
+void xe_tile_sysfs_init(struct xe_tile *tile);
+
+static inline struct xe_tile *
+kobj_to_tile(struct kobject *kobj)
+{
+	return container_of(kobj, struct kobj_tile, base)->tile;
+}
+
+#endif /* _XE_TILE_SYSFS_H_ */