arm: Xilinx Zynq dt patches for v4.5

- Add usb phy for Zybo
 - Use earlycon instead of earlyprintk
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Merge tag 'zynq-dt-for-4.6' of https://github.com/Xilinx/linux-xlnx into next/dt

Merge "ARM: Xilinx Zynq dt patches for v4.6" from Michal Simek

- Add usb phy for Zybo
- Use earlycon instead of earlyprintk

* tag 'zynq-dt-for-4.6' of https://github.com/Xilinx/linux-xlnx:
  ARM: zynq: Use earlycon instead of earlyprintk
  ARM: dts: zynq: Enable USB and USB PHY for ZYBO

arch/arm/boot/dts/zynq-parallella.dts

@@ -34,7 +34,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "earlyprintk root=/dev/mmcblk0p2 rootfstype=ext4 rw rootwait";
+		bootargs = "earlycon root=/dev/mmcblk0p2 rootfstype=ext4 rw rootwait";
 		stdout-path = "serial0:115200n8";
 	};
 };

arch/arm/boot/dts/zynq-zc702.dts

@@ -30,7 +30,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "earlyprintk";
+		bootargs = "earlycon";
 		stdout-path = "serial0:115200n8";
 	};
 

arch/arm/boot/dts/zynq-zc706.dts

@@ -30,7 +30,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "earlyprintk";
+		bootargs = "earlycon";
 		stdout-path = "serial0:115200n8";
 	};
 

arch/arm/boot/dts/zynq-zed.dts

@@ -29,7 +29,7 @@ memory {
 	};
 
 	chosen {
-		bootargs = "earlyprintk";
+		bootargs = "earlycon";
 		stdout-path = "serial0:115200n8";
 	};
 

arch/arm/boot/dts/zynq-zybo.dts

@@ -29,10 +29,15 @@ memory {
 	};
 
 	chosen {
-		bootargs = "earlyprintk";
+		bootargs = "earlycon";
 		stdout-path = "serial0:115200n8";
 	};
 
+	usb_phy0: phy0 {
+		#phy-cells = <0>;
+		compatible = "usb-nop-xceiv";
+		reset-gpios = <&gpio0 46 1>;
+	};
 };
 
 &clkc {
@@ -56,3 +61,9 @@ &sdhci0 {
 &uart1 {
 	status = "okay";
 };
+
+&usb0 {
+	status = "okay";
+	dr_mode = "host";
+	usb-phy = <&usb_phy0>;
+};