ARM: dts: Use defined GPIO constants in flags cell for OMAP2+ boards

Many OMAP2+ DTS are not using the defined constants to express
the GPIO polarity. Replace these so the DTS are easier to read.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/omap3-ldp.dts b/arch/arm/boot/dts/omap3-ldp.dts
index bd6e676..d2fab8c 100644
--- a/arch/arm/boot/dts/omap3-ldp.dts
+++ b/arch/arm/boot/dts/omap3-ldp.dts
@@ -200,7 +200,7 @@
 	tsc2046@0 {
 		interrupt-parent = <&gpio2>;
 		interrupts = <22 0>;		/* gpio54 */
-		pendown-gpio = <&gpio2 22 0>;
+		pendown-gpio = <&gpio2 22 GPIO_ACTIVE_HIGH>;
 	};
 };