rtc: add parameter ioctl
Add an ioctl allowing to get and set extra parameters for an RTC. For now,
only handle getting available features.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211018151933.76865-3-alexandre.belloni@bootlin.com
parent
917425f7
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