ARM: dts: omap3-pandora-common: Use IRQ_TYPE specifier

Replace magic number with the proper IRQ_TYPE specifier to improve DT
readability.
Signed-off-by: Hernán Gonzalez <hernan@vanguardiasur.com.ar>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-pandora-common.dtsi

@@ -621,7 +621,7 @@ tsc2046@0 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&penirq_pins>;
 		interrupt-parent = <&gpio3>;
-		interrupts = <30 0>;	/* GPIO_94 */
+		interrupts = <30 IRQ_TYPE_NONE>;	/* GPIO_94 */
 		pendown-gpio = <&gpio3 30 GPIO_ACTIVE_HIGH>;
 		vcc-supply = <&vaux4>;