ARM: dts: am335x-baltos-ir3220: Use IRQ_TYPE specifier

GPIO_ACTIVE_LOW was being used to specify an interrupt, use
IRQ_TYPE_EDGE_RISING instead. This improves DT readability.
Signed-off-by: Hernán Gonzalez <hernan@vanguardiasur.com.ar>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-baltos-ir3220.dts

@@ -85,7 +85,7 @@ tca6416: gpio@20 {
 		gpio-controller;
 		#gpio-cells = <2>;
 		interrupt-parent = <&gpio0>;
-		interrupts = <20 GPIO_ACTIVE_LOW>;
+		interrupts = <20 IRQ_TYPE_EDGE_RISING>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&tca6416_pins>;
 	};