Update nrf5340_cpuapp.dtsi

Author: kylebonnici

dts/arm/nordic/nrf5340_cpuapp.dtsi

@@ -57,6 +57,7 @@
 		};
 
 		peripheral@50000000 {
+			reg = <0x40000000 0x10000000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x0 0x50000000 0x10000000>;