ARM: dts: imx: Remove skeleton.dtsi

As explained by commit 9c0da3cc61f1233c ("ARM: dts: explicitly mark
skeleton.dtsi as deprecated"), including skeleton.dtsi is deprecated.

This fixes the following warning with W=1:

Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 0ad893b..3aabf65 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -10,10 +10,12 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
-#include "skeleton.dtsi"
 #include "imx28-pinfunc.h"
 
 / {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
 	interrupt-parent = <&icoll>;
 
 	aliases {