ARM: zynq: dts: add description of the second uart

The zynq-7000 has an additional UART at 0xE0001000.  Describe it in the
device tree.

Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
1 file changed