The CS47L24 and WM1831 codecs only have two GPIO lines, but are
otherwise similar to the WM8280.
Signed-off-by: NRichard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>