arm64: dts: marvell: use mvebu-icu.h where possible

Back when the ICU Device Tree binding was introduced, we could not use
mvebu-icu.h from the Device Tree files, because the DT files and
mvebu-icu.h were following different merge routes towards Linus
tree. Now that both have been merged, we can switch the Marvell Armada
CP110 Device Tree files to use the mvebu-icu.h header instead of
duplicating the ICU_GRP_NSR definition.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi

@@ -44,7 +44,7 @@
  * Device Tree file for Marvell Armada CP110 Master.
  */
 
-#define ICU_GRP_NSR 0x0
+#include <dt-bindings/interrupt-controller/mvebu-icu.h>
 
 / {
 	cp110-master {

arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi

@@ -44,7 +44,7 @@
  * Device Tree file for Marvell Armada CP110 Slave.
  */
 
-#define ICU_GRP_NSR 0x0
+#include <dt-bindings/interrupt-controller/mvebu-icu.h>
 
 / {
 	cp110-slave {