Merge tag 'zynq-dt-for-4.6' of https://github.com/Xilinx/linux-xlnx into next/dt

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