ARM: dts: am437x: pixcir_tangoc: use correct flags for irq types

Now IRQs for Pixcir Tangoc touchscreen are defined using
IRQ_TYPE_NONE in am437x-gp-evm.dts and am43x-epos-evm.dts wich
do not correspond HW.

Hence, update am437x-gp-evm.dts and am43x-epos-evm.dts files
and use correct flag IRQ_TYPE_EDGE_FALLING for irq types.

While here, remove duplicated irq declaration for pixcir_ts@5c node
in am437x-gp-evm.dts.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am437x-gp-evm.dts

@@ -590,8 +590,6 @@ pixcir_ts@5c {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pixcir_ts_pins>;
 		reg = <0x5c>;
-		interrupt-parent = <&gpio3>;
-		interrupts = <22 0>;
 
 		attb-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
 
@@ -599,7 +597,7 @@ pixcir_ts@5c {
 		 * 0x264 represents the offset of padconf register of
 		 * gpio3_22 from am43xx_pinmux base.
 		 */
-		interrupts-extended = <&gpio3 22 IRQ_TYPE_NONE>,
+		interrupts-extended = <&gpio3 22 IRQ_TYPE_EDGE_FALLING>,
 				      <&am43xx_pinmux 0x264>;
 		interrupt-names = "tsc", "wakeup";
 

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -491,7 +491,7 @@ pixcir_ts@5c {
 		pinctrl-0 = <&pixcir_ts_pins>;
 		reg = <0x5c>;
 		interrupt-parent = <&gpio1>;
-		interrupts = <17 0>;
+		interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
 
 		attb-gpio = <&gpio1 17 GPIO_ACTIVE_HIGH>;