rtc: cmos: Replace spin_lock_irqsave with spin_lock in hard IRQ
It is redundant to do irqsave and irqrestore in hardIRQ context, where it has been in a irq-disabled context. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1612355981-6764-2-git-send-email-tanxiaofei@huawei.com
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