regulator: 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>
Link: https://lore.kernel.org/r/1621679151-15617-1-git-send-email-fanghao11@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/hi655x-regulator.c

@@ -2,7 +2,7 @@
 //
 // Device driver for regulators in Hi655x IC
 //
-// Copyright (c) 2016 Hisilicon.
+// Copyright (c) 2016 HiSilicon Ltd.
 //
 // Authors:
 // Chen Feng <puck.chen@hisilicon.com>

drivers/staging/hikey9xx/hi6421v600-regulator.c

@@ -3,7 +3,7 @@
 // Device driver for regulators in Hisi IC
 //
 // Copyright (c) 2013 Linaro Ltd.
-// Copyright (c) 2011 Hisilicon.
+// Copyright (c) 2011 HiSilicon Ltd.
 // Copyright (c) 2020-2021 Huawei Technologies Co., Ltd
 //
 // Guodong Xu <guodong.xu@linaro.org>