zynq: Add new ddrc driver for ECC support

The first 1MB is not initialized by first stage bootloader.
Check if memory is setup to 16bit mode and ECC is enabled.
If it is, clear the first 1MB.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
fpga: zynqpl: Add support for zc7100 device.

- Add support for zc7100 device.
- FPGA programming on few of the SOC(zc7100) takes more
  than 1sec, hence increased the program time by 4sec to
  sync' all soc's.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>