ARM: dts: STi: Add fake reg property for usb2_picophyX nodes

Add fake reg property for usb2_picophy nodes.
This allows to fix the following warning when compiling dtb
with W=1 option :

arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/phy2 missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/phy3 missing or empty reg/ranges property

arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/phy2 missing or empty reg/ranges property
arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg):
Node /soc/phy3 missing or empty reg/ranges property

arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/phy2 missing or empty reg/ranges property
arch/arm/boot/dts/stih418-b2199.dtb: Warning (simple_bus_reg):
Node /soc/phy3 missing or empty reg/ranges property
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

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

@@ -385,8 +385,9 @@ i2c@9541000 {
 			status = "disabled";
 		};
 
-		usb2_picophy0: phy1 {
+		usb2_picophy0: phy1@0 {
 			compatible = "st,stih407-usb2-phy";
+			reg = <0 0>;
 			#phy-cells = <0>;
 			st,syscfg = <&syscfg_core 0x100 0xf4>;
 			resets = <&softreset STIH407_PICOPHY_SOFTRESET>,

arch/arm/boot/dts/stih410-b2120.dts

@@ -37,11 +37,11 @@ mmc0: sdhci@9060000 {
 			sd-uhs-ddr50;
 		};
 
-		usb2_picophy1: phy2 {
+		usb2_picophy1: phy2@0 {
 			status = "okay";
 		};
 
-		usb2_picophy2: phy3 {
+		usb2_picophy2: phy3@0 {
 			status = "okay";
 		};
 

arch/arm/boot/dts/stih410-b2260.dts

@@ -127,11 +127,11 @@ pwm1: pwm@9510000 {
 			status = "okay";
 		};
 
-		usb2_picophy1: phy2 {
+		usb2_picophy1: phy2@0 {
 			status = "okay";
 		};
 
-		usb2_picophy2: phy3 {
+		usb2_picophy2: phy3@0 {
 			status = "okay";
 		};
 

arch/arm/boot/dts/stih410.dtsi

@@ -16,8 +16,9 @@ aliases {
 	};
 
 	soc {
-		usb2_picophy1: phy2 {
+		usb2_picophy1: phy2@0 {
 			compatible = "st,stih407-usb2-phy";
+			reg = <0 0>;
 			#phy-cells = <0>;
 			st,syscfg = <&syscfg_core 0xf8 0xf4>;
 			resets = <&softreset STIH407_PICOPHY_SOFTRESET>,
@@ -27,8 +28,9 @@ usb2_picophy1: phy2 {
 			status = "disabled";
 		};
 
-		usb2_picophy2: phy3 {
+		usb2_picophy2: phy3@0 {
 			compatible = "st,stih407-usb2-phy";
+			reg = <0 0>;
 			#phy-cells = <0>;
 			st,syscfg = <&syscfg_core 0xfc 0xf4>;
 			resets = <&softreset STIH407_PICOPHY_SOFTRESET>,

arch/arm/boot/dts/stih418.dtsi

@@ -30,8 +30,9 @@ cpu@3 {
 	};
 
 	soc {
-		usb2_picophy1: phy2 {
+		usb2_picophy1: phy2@0 {
 			compatible = "st,stih407-usb2-phy";
+			reg = <0 0>;
 			#phy-cells = <0>;
 			st,syscfg = <&syscfg_core 0xf8 0xf4>;
 			resets = <&softreset STIH407_PICOPHY_SOFTRESET>,
@@ -39,8 +40,9 @@ usb2_picophy1: phy2 {
 			reset-names = "global", "port";
 		};
 
-		usb2_picophy2: phy3 {
+		usb2_picophy2: phy3@0 {
 			compatible = "st,stih407-usb2-phy";
+			reg = <0 0>;
 			#phy-cells = <0>;
 			st,syscfg = <&syscfg_core 0xfc 0xf4>;
 			resets = <&softreset STIH407_PICOPHY_SOFTRESET>,