arm64: dts: marvell: cn9131-cf-solidwan: Add missing GPIO properties on "nxp,pca9536"

The PCA9536 is always a GPIO provider, so add the missing properties.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

Author: robherring

arch/arm64/boot/dts/marvell/cn9131-cf-solidwan.dts

@@ -202,6 +202,8 @@
 	expander0: gpio@41 {
 		compatible = "nxp,pca9536";
 		reg = <0x41>;
+		gpio-controller;
+		#gpio-cells = <2>;
 
 		usb-a-vbus0-ilimit-hog {
 			gpio-hog;