ARM: dts: hisi-x5hd2: Remove skeleton.dtsi inclusion

Since commit 9c0da3cc ("ARM: dts: explicitly mark skeleton.dtsi
as deprecated"), remove deprecated skeleton.dtsi.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm/boot/dts/hisi-x5hd2.dtsi

@@ -7,10 +7,12 @@
  * publishhed by the Free Software Foundation.
  */
 
-#include "skeleton.dtsi"
 #include <dt-bindings/clock/hix5hd2-clock.h>
 
 / {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
 	aliases {
 		serial0 = &uart0;
 	};