arm: mvebu: Add IPI support via doorbells

This patch enhances the IRQ controller driver to add support for
Inter-Processor-Interrupts that are needed to enable SMP support.

Signed-off-by: Yehuda Yitschak <yehuday@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
index 1f95e22..e6db2b7 100644
--- a/arch/arm/boot/dts/armada-xp.dtsi
+++ b/arch/arm/boot/dts/armada-xp.dtsi
@@ -24,7 +24,7 @@
 
 	mpic: interrupt-controller@d0020000 {
 	      reg = <0xd0020a00 0x1d0>,
-		    <0xd0021870 0x58>;
+		    <0xd0021070 0x58>;
 	};
 
 	armada-370-xp-pmsu@d0022000 {