ARM: vexpress: Fix wdt interrupt in ca15{-tc1,_a7} dts

As the wdt nodes have the gic as their interrupt-parent, their
interrupts property should be 3 cells in format described in the gic
devicetree binding document.

This patch fixes the interrupts property in the wdt nodes to be in the
correct format.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>

arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts

@@ -70,7 +70,7 @@ wdt@2b060000 {
 		compatible = "arm,sp805", "arm,primecell";
 		status = "disabled";
 		reg = <0 0x2b060000 0 0x1000>;
-		interrupts = <98>;
+		interrupts = <0 98 4>;
 		clocks = <&oscclk7>;
 		clock-names = "apb_pclk";
 	};

arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts

@@ -72,7 +72,7 @@ memory@80000000 {
 	wdt@2a490000 {
 		compatible = "arm,sp805", "arm,primecell";
 		reg = <0 0x2a490000 0 0x1000>;
-		interrupts = <98>;
+		interrupts = <0 98 4>;
 		clocks = <&oscclk6a>, <&oscclk6a>;
 		clock-names = "wdogclk", "apb_pclk";
 	};