ARM: dts: stm32f429: Add system config bank node

Signed-off-by: Alexandre TORGUE <alexandre.torgue@gmail.com>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>

arch/arm/boot/dts/stm32f429.dtsi

@@ -171,6 +171,11 @@ usart6: serial@40011400 {
 			status = "disabled";
 		};
 
+		syscfg: system-config@40013800 {
+			compatible = "syscon";
+			reg = <0x40013800 0x400>;
+		};
+
 		pin-controller {
 			#address-cells = <1>;
 			#size-cells = <1>;