This patch adds device tree bindings for the NXP PCA9571,
a 8-bit I2C GPIO expander.
Signed-off-by: NLucas Stach <l.stach@pengutronix.de>
Acked-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: NBartosz Golaszewski <brgl@bgdev.pl>