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BMG160 needs VDD and VDDIO regulators that might need to be explicitly enabled. Add some rudimentary support to obtain and enable these regulators during probe() and disable them using a devm action. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20201211183815.51269-2-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>