ARM: dts: exynos: Add interrupt line to MAX8997 PMIC on exynos4210-trats

MAX8997 PMIC requires interrupt and fails probing without it.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Fixes: d105f0b1 ("ARM: dts: Add basic dts file for Samsung Trats board")
Cc: <stable@vger.kernel.org>
[k.kozlowski: Write commit message, add CC-stable]
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>

arch/arm/boot/dts/exynos4210-trats.dts

@@ -298,6 +298,8 @@
 		compatible = "maxim,max8997-pmic";
 
 		reg = <0x66>;
+		interrupt-parent = <&gpx0>;
+		interrupts = <7 0>;
 
 		max8997,pmic-buck1-uses-gpio-dvs;
 		max8997,pmic-buck2-uses-gpio-dvs;