ARM: dts: omap5-board-common: describe gpadc for Palmas

tested on OMP5432 EVM
Signed-off-by: NH. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap5-board-common.dtsi

@@ -391,6 +391,16 @@
 			ti,backup-battery-charge-high-current;
 		};
 
+		gpadc {
+			compatible = "ti,palmas-gpadc";
+			interrupts = <18 0
+				      16 0
+				      17 0>;
+			#io-channel-cells = <1>;
+			ti,channel0-current-microamp = <5>;
+			ti,channel3-current-microamp = <10>;
+		};
+
 		palmas_pmic {
 			compatible = "ti,palmas-pmic";
 			interrupt-parent = <&palmas>;