boards: nordic: lite_nrf52840: correct app_rom start address

Correct app_rom start address.

Signed-off-by: Eivind Jølsgard <[email protected]>

Author: eivindj-nordic

boards/nordic/lite_nrf52840/lite_nrf52840_nrf52840_no_softdevice.dts

@@ -20,15 +20,14 @@
 	};
 };
 
-
 &flash0 {
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		app_rom: partition@0 {
 			label = "app";
-			reg = <0x00027000 0x00100000>;
+			reg = <0x00000000 DT_SIZE_K(1024)>;
 		};
 	};
 };