ARM: dts: add port sub-nodes to exynos usb host modules for exynos4

This patch adds port sub-nodes to exynos4 ehci and ohci modules, which
are required by recently merged new exynos4 usb2 phy support.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4.dtsi

@@ -322,6 +322,23 @@
 		clocks = <&clock CLK_USB_HOST>;
 		clock-names = "usbhost";
 		status = "disabled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		port@0 {
+		    reg = <0>;
+		    phys = <&exynos_usbphy 1>;
+		    status = "disabled";
+		};
+		port@1 {
+		    reg = <1>;
+		    phys = <&exynos_usbphy 2>;
+		    status = "disabled";
+		};
+		port@2 {
+		    reg = <2>;
+		    phys = <&exynos_usbphy 3>;
+		    status = "disabled";
+		};
 	};
 
 	ohci@12590000 {
@@ -331,6 +348,13 @@
 		clocks = <&clock CLK_USB_HOST>;
 		clock-names = "usbhost";
 		status = "disabled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		port@0 {
+		    reg = <0>;
+		    phys = <&exynos_usbphy 1>;
+		    status = "disabled";
+		};
 	};
 
 	i2s1: i2s@13960000 {