ARM: zynqmp_ep: Enable ethernet for EP

Enable gem0 and setup phy addr for EP.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

include/configs/xilinx_zynqmp_ep.h

@@ -15,6 +15,9 @@
 #ifndef __CONFIG_ZYNQMP_EP_H
 #define __CONFIG_ZYNQMP_EP_H
 
+#define CONFIG_ZYNQ_GEM0
+#define CONFIG_ZYNQ_GEM_PHY_ADDR0	7
+
 #define CONFIG_ZYNQ_SERIAL_UART0
 #define CONFIG_ZYNQ_SDHCI0
 #define CONFIG_ZYNQ_I2C0