pinctrl: ingenic: Add ingenic,jz4725b-gpio compatible string

Add a compatible string to support the GPIO chips on the JZ4725B SoC.
There was already a compatible string for the pinctrl node, but not for
the individual GPIO chip nodes.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200612120609.12730-1-paul@crapouillou.netSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-ingenic.c

@@ -2295,6 +2295,7 @@ static const struct regmap_config ingenic_pinctrl_regmap_config = {
 
 static const struct of_device_id ingenic_gpio_of_match[] __initconst = {
 	{ .compatible = "ingenic,jz4740-gpio", },
+	{ .compatible = "ingenic,jz4725b-gpio", },
 	{ .compatible = "ingenic,jz4760-gpio", },
 	{ .compatible = "ingenic,jz4770-gpio", },
 	{ .compatible = "ingenic,jz4780-gpio", },