dts: nordic: nrf54h20: add missing ranges to reserved-memory

Add missing ranges to nrf54h20.dtsi reserved-memory. No translation
is required so ranges is set to <empty>.

Signed-off-by: Bjarki Arge Andreasen <[email protected]>

Author: bjarki-andreasen

dts/vendor/nordic/nrf54h20.dtsi

@@ -151,6 +151,7 @@
 	reserved-memory {
 		#address-cells = <1>;
 		#size-cells = <1>;
+		ranges = <>;
 	};
 
 	clocks {