ARM: dts: lpc18xx: add dac node

Add node for the 10-bit DAC found on all lpc18xx SoCs.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>

arch/arm/boot/dts/lpc18xx.dtsi

@@ -444,6 +444,15 @@ i2c1: i2c@400e0000 {
 			status = "disabled";
 		};
 
+		dac: dac@400e1000 {
+			compatible = "nxp,lpc1850-dac";
+			reg = <0x400e1000 0x1000>;
+			interrupts = <0>;
+			clocks = <&ccu1 CLK_APB3_DAC>;
+			resets = <&rgu 42>;
+			status = "disabled";
+		};
+
 		can0: can@400e2000 {
 			compatible = "bosch,c_can";
 			reg = <0x400e2000 0x1000>;