ARM: dts: STi: Add fake reg for restart, powerdown and picophy/softreset

Add fake reg property for restart, powerdown, picophyreset
and softreset.
This allows to fix the following warning when compiling
dtb with W=1 option:

arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg):
Node /soc/restart missing or empty reg/ranges property
arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg):
Node /soc/powerdown-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg):
Node /soc/softreset-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg):
Node /soc/picophyreset-controller missing or empty reg/ranges property

arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/restart missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/powerdown-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/softreset-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/picophyreset-controller missing or empty reg/ranges property

arch/arm/boot/dts/stih410-b2260.dtb: Warning (simple_bus_reg):
Node /soc/restart missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2260.dtb: Warning (simple_bus_reg):
Node /soc/powerdown-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2260.dtb: Warning (simple_bus_reg):
Node /soc/softreset-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2260.dtb: Warning (simple_bus_reg):
Node /soc/picophyreset-controller missing or empty reg/ranges property

arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/restart missing or empty reg/ranges property
arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/powerdown-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/softreset-controller missing or empty reg/ranges property
arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/picophyreset-controller missing or empty reg/ranges property
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

arch/arm/boot/dts/stih407-family.dtsi

@@ -125,24 +125,28 @@ soc {
 		ranges;
 		compatible = "simple-bus";
 
-		restart {
+		restart: restart-controller@0 {
 			compatible = "st,stih407-restart";
+			reg = <0 0>;
 			st,syscfg = <&syscfg_sbc_reg>;
 			status = "okay";
 		};
 
-		powerdown: powerdown-controller {
+		powerdown: powerdown-controller@0 {
 			compatible = "st,stih407-powerdown";
+			reg = <0 0>;
 			#reset-cells = <1>;
 		};
 
-		softreset: softreset-controller {
+		softreset: softreset-controller@0 {
 			compatible = "st,stih407-softreset";
+			reg = <0 0>;
 			#reset-cells = <1>;
 		};
 
-		picophyreset: picophyreset-controller {
+		picophyreset: picophyreset-controller@0 {
 			compatible = "st,stih407-picophyreset";
+			reg = <0 0>;
 			#reset-cells = <1>;
 		};