ARM: dts: lpc18xx: add creg (syscon) node

The CREG block contains a collection of miscellaneous
configuration register like Ethernet phy mode, low
power clocks and DMA multiplexer. These registers
needs to be accessed from other drivers and syscon
provides this capability.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>

arch/arm/boot/dts/lpc18xx.dtsi

@@ -78,6 +78,12 @@ mmcsd: mmcsd@40004000 {
 			status = "disabled";
 		};
 
+		creg: syscon@40043000 {
+			compatible = "nxp,lpc1850-creg", "syscon", "simple-mfd";
+			reg = <0x40043000 0x1000>;
+			clocks = <&ccu1 CLK_CPU_CREG>;
+		};
+
 		cgu: clock-controller@40050000 {
 			compatible = "nxp,lpc1850-cgu";
 			reg = <0x40050000 0x1000>;