ARM: dts: hisilicon: use the correct HiSilicon copyright

s/Hisilicon/HiSilicon/.
It should use capital S, according to the official website
https://www.hisilicon.com/en.
Signed-off-by: Hao Fang <fanghao11@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm/boot/dts/hi3620.dtsi

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Hisilicon Ltd. Hi3620 SoC
+ * HiSilicon Ltd. Hi3620 SoC
  *
- * Copyright (C) 2012-2013 Hisilicon Ltd.
+ * Copyright (C) 2012-2013 HiSilicon Ltd.
  * Copyright (C) 2012-2013 Linaro Ltd.
  *
  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>

arch/arm/boot/dts/hip01-ca9x2.dts

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Hisilicon Ltd. HiP01 SoC
+ * HiSilicon Ltd. HiP01 SoC
  *
- * Copyright (C) 2014 Hisilicon Ltd.
+ * Copyright (C) 2014 HiSilicon Ltd.
  * Copyright (C) 2014 Huawei Ltd.
  *
  * Author: Wang Long <long.wanglong@huawei.com>

arch/arm/boot/dts/hip01.dtsi

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Hisilicon Ltd. HiP01 SoC
+ * HiSilicon Ltd. HiP01 SoC
  *
- * Copyright (c) 2014 Hisilicon Ltd.
+ * Copyright (c) 2014 HiSilicon Ltd.
  * Copyright (c) 2014 Huawei Ltd.
  *
  * Author: Wang Long <long.wanglong@huawei.com>

arch/arm/boot/dts/hip04.dtsi

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Hisilicon Ltd. HiP04 SoC
+ * HiSilicon Ltd. HiP04 SoC
  *
- * Copyright (C) 2013-2014 Hisilicon Ltd.
+ * Copyright (C) 2013-2014 HiSilicon Ltd.
  * Copyright (C) 2013-2014 Linaro Ltd.
  *
  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>

arch/arm/boot/dts/hisi-x5hd2-dkb.dts

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2013-2014 Linaro Ltd.
- * Copyright (c) 2013-2014 Hisilicon Limited.
+ * Copyright (c) 2013-2014 HiSilicon Limited.
  */
 
 /dts-v1/;

arch/arm/boot/dts/hisi-x5hd2.dtsi

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2013-2014 Linaro Ltd.
- * Copyright (c) 2013-2014 Hisilicon Limited.
+ * Copyright (c) 2013-2014 HiSilicon Limited.
  */
 
 #include <dt-bindings/clock/hix5hd2-clock.h>

arch/arm/boot/dts/sd5203.dts

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2020 Hisilicon Limited.
+ * Copyright (c) 2020 HiSilicon Limited.
  *
  * DTS file for Hisilicon SD5203 Board
  */