This switches the AB8500 hardware monitor driver to using
the standard IIO ADC channel lookup and conversion routines.
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NJonathan Cameron <jic23@kernel.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>