reserved memory

Author: e-rk

dts/common/nordic/nrf54l20.dtsi

@@ -64,7 +64,7 @@
 
 		cpuapp_sram: memory@20000000 {
 			compatible = "mmio-sram";
-			reg = <0x20000000 DT_SIZE_K(512)>;
+			reg = <0x20000000 DT_SIZE_K(511)>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x0 0x20000000 0x2f000>;