power: reset: hisi-reboot: use the correct HiSilicon copyright

s/Hisilicon/HiSilicon/g.
It should use capital S, according to
https://www.hisilicon.com/en/terms-of-use.
Signed-off-by: Hao Fang <fanghao11@huawei.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/reset/hisi-reboot.c

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