zynq: Add zynq_zc770 xm013 board support

ZC770 is a complete development board based on the Xilinx Zynq-7000
All Programmable SoC, similar to ZC70x board but which has four
different daughter cards, like XM010, XM011, XM012 and XM013

ZC770 XM013:
- 1GB DDR3
- 128 Mb Quad-SPI Flash(dual parallel)
- USB-UART

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>

include/configs/zynq_zc770.h

@@ -21,6 +21,11 @@
 # define CONFIG_ZYNQ_SDHCI0
 # define CONFIG_ZYNQ_SPI
 
+#elif defined(CONFIG_ZC770_XM013)
+# define CONFIG_ZYNQ_SERIAL_UART0
+# define CONFIG_ZYNQ_GEM1
+# define CONFIG_ZYNQ_GEM_PHY_ADDR1	7
+
 #else
 # define CONFIG_ZYNQ_SERIAL_UART0
 #endif