drm/bridge: synopsys: Fix Copyright Writing Style of dw-hdmi-qp

The standard writing style should be: Co., Ltd.
This fix the mail server warning:
DBL_SPAM(6.50)[co.ltd:url];

Signed-off-by: Andy Yan <[e-mail]>
Reviewed-by: Cristian Ciocaltea <[e-mail]>
Reviewed-by: Neil Armstrong <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Neil Armstrong <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h

···
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) Rockchip Electronics Co.Ltd
+ * Copyright (C) Rockchip Electronics Co., Ltd.
  * Author:
  *      Algea Cao <[e-mail]>
  */