arm64: dts: realtek: rtd16xx: Add CRT syscon node

Prepare a CRT syscon mfd node.
Acked-by: James Tai <james.tai@realtek.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

arch/arm64/boot/dts/realtek/rtd16xx.dtsi

@@ -137,6 +137,15 @@ rbus: bus@98000000 {
 			#size-cells = <1>;
 			ranges = <0x0 0x98000000 0x200000>;
 
+			crt: syscon@0 {
+				compatible = "syscon", "simple-mfd";
+				reg = <0x0 0x1000>;
+				reg-io-width = <4>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0x0 0x0 0x1000>;
+			};
+
 			iso: syscon@7000 {
 				compatible = "syscon", "simple-mfd";
 				reg = <0x7000 0x1000>;