arm: Xilinx Zynq SoC patches for v3.20

- Enable pincontrol
- Simplified SLCR initialization
- Setup default ARCH_NR_GPIO

arm: Xilinx Zynq dt patches for v3.20

- Add USB chipidea driver to DT
- Add pincontrol
- Add aliases node
- Fix WDT node

arm: Xilinx Zynq DT fixes for v3.19

- Add USB chipidea driver to DT

Tagged for xilinx-v2014.2-trd

arm: Xilinx Zynq dt patches for v3.19

- Declare Digilent and vendor
- Add Zybo board support
- Fix VDMA documentation to be align with the driver

arm: Xilinx Zynq cleanup patches for v3.19

- Remove unused file and declaration

Tagged for xilinx-v2014.4

arm: Xilinx Zynq fix for v3.18

- Remove unused hotplug.c file

arm: Xilinx Zynq DT fixes for v3.18

- Fix gem register size
- Fix OPP
- Add missing references
- Trivial cleanup

Tagged for xilinx-v2014.3