ARM: dts: sun9i: Remove skeleton to avoid warnings

Using skeleton.dtsi will create a memory node that will generate a warning
in DTC. However, that node will be created by the bootloader, so we can
just remove it entirely in order to remove that warning.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun9i-a80.dtsi

@@ -42,8 +42,6 @@
  *     OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include "skeleton64.dtsi"
-
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
 #include <dt-bindings/clock/sun9i-a80-ccu.h>
@@ -54,6 +52,8 @@
 #include <dt-bindings/reset/sun9i-a80-usb.h>
 
 / {
+	#address-cells = <2>;
+	#size-cells = <2>;
 	interrupt-parent = <&gic>;
 
 	cpus {
@@ -109,11 +109,6 @@ cpu7: cpu@103 {
 		};
 	};
 
-	memory {
-		/* 8GB max. with LPAE */
-		reg = <0 0x20000000 0x02 0>;
-	};
-
 	timer {
 		compatible = "arm,armv7-timer";
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,