gpio: uniphier: Fix void functions to remove return value

stable inclusion
from stable-5.10.70
commit 1bba406c07b3cb008ba0456ec589b6aa46d8a830
bugzilla: 182949 https://gitee.com/openeuler/kernel/issues/I4I3GQ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1bba406c07b3cb008ba0456ec589b6aa46d8a830



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[ Upstream commit 2dd824cc ]

The return type of irq_chip.irq_mask() and irq_chip.irq_unmask() should
be void.

Fixes: dbe776c2 ("gpio: uniphier: add UniPhier GPIO controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Weilong Chen <chenweilong@huawei.com>

Signed-off-by: Chen Jun <chenjun102@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>