iio: adc: meson-saradc: Fix indentation of arguments after a line-break

Align the function arguments after a line-break with the opening
parenthesis on the previous line. No functional changes intended.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210717233718.332267-4-martin.blumenstingl@googlemail.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>