sunxi: dts: H616: Drop reserved-memory node

Trusted Firmware now adds the /reserved-memory subnode to the DT at
runtime[1], putting in the right values.

Drop our hard-coded version, as this might clash with the actual values
(which have also changed), and rely on TF-A to add the node.

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/7770Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Reviewed-by: NSamuel Holland <samuel@sholland.org>
Reviewed-by: NJagan Teki <jagan@amarulasolutions.com>

arch/arm/dts/sun50i-h616.dtsi

@@ -51,18 +51,6 @@
 		};
 	};
 
-	reserved-memory {
-		#address-cells = <2>;
-		#size-cells = <2>;
-		ranges;
-
-		/* 512KiB reserved for ARM Trusted Firmware (BL31) */
-		secmon_reserved: secmon@40000000 {
-			reg = <0x0 0x40000000 0x0 0x80000>;
-			no-map;
-		};
-	};
-
 	osc24M: osc24M_clk {
 		#clock-cells = <0>;
 		compatible = "fixed-clock";