drm/xe: Fix copyright and function naming in xe_ttm_vram_mgr

- Correct copyright year from "2002" to "2022".
- Rename ttm_vram_mgr_fini() to xe_ttm_vram_mgr_fini() to avoid
confusion with generic TTM helpers.

No functional changes intended.

Signed-off-by: Shuicheng Lin <[e-mail]>
Reviewed-by: Nitin Gote <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rodrigo Vivi <[e-mail]>

drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

···
 // SPDX-License-Identifier: MIT
 /*
  * Copyright © 2021-2022 Intel Corporation
- * Copyright (C) 2021-2002 Red Hat
+ * Copyright (C) 2021-2022 Red Hat
  */
 
 #include <drm/drm_managed.h>
···
 	.debug	= xe_ttm_vram_mgr_debug
 };
 
-static void ttm_vram_mgr_fini(struct drm_device *dev, void *arg)
+static void xe_ttm_vram_mgr_fini(struct drm_device *dev, void *arg)
 {
 	struct xe_device *xe = to_xe_device(dev);
 	struct xe_ttm_vram_mgr *mgr = arg;
···
 	ttm_set_driver_manager(&xe->ttm, mem_type, &mgr->manager);
 	ttm_resource_manager_set_used(&mgr->manager, true);
 
-	return drmm_add_action_or_reset(&xe->drm, ttm_vram_mgr_fini, mgr);
+	return drmm_add_action_or_reset(&xe->drm, xe_ttm_vram_mgr_fini, mgr);
 }
 
 /**