dt-bindings: gpio: pca953x: document the nxp,pca6416

The NXP PCA6416 is a variant of the PCA GPIO expander, with 16 GPIOs.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed