ARM: dts: qcom-msm8660: add interrupt controller properties

Now that the pmic-mpp is a proper hierarchical IRQ chip, add interrupt
controller properties ('interrupt-controller' and '#interrupt-cells').
The interrupts property is no longer needed so remove it.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211008012524.481877-21-dmitry.baryshkov@linaro.org

arch/arm/boot/dts/qcom-msm8660.dtsi

@@ -308,20 +308,8 @@ pm8058_mpps: mpps@50 {
 					gpio-controller;
 					#gpio-cells = <2>;
 					gpio-ranges = <&pm8058_mpps 0 0 12>;
-					interrupt-parent = <&pm8058>;
-					interrupts =
-					<128 IRQ_TYPE_NONE>,
-					<129 IRQ_TYPE_NONE>,
-					<130 IRQ_TYPE_NONE>,
-					<131 IRQ_TYPE_NONE>,
-					<132 IRQ_TYPE_NONE>,
-					<133 IRQ_TYPE_NONE>,
-					<134 IRQ_TYPE_NONE>,
-					<135 IRQ_TYPE_NONE>,
-					<136 IRQ_TYPE_NONE>,
-					<137 IRQ_TYPE_NONE>,
-					<138 IRQ_TYPE_NONE>,
-					<139 IRQ_TYPE_NONE>;
+					interrupt-controller;
+					#interrupt-cells = <2>;
 				};
 
 				pwrkey@1c {