socfpga: initialize designware ethernet

Enable initialization fo designware ethernet controller. With this
patch, ethernet works in my configuration, provided I set ethernet
address in the environment.

Signed-off-by: Pavel Machek <pavel@denx.de>
diff --git a/include/configs/socfpga_cyclone5.h b/include/configs/socfpga_cyclone5.h
index e02b50a..5d145cd 100644
--- a/include/configs/socfpga_cyclone5.h
+++ b/include/configs/socfpga_cyclone5.h
@@ -208,6 +208,38 @@
 #define CONFIG_ENV_IS_NOWHERE
 
 /*
+ * network support
+ */
+#ifndef CONFIG_SOCFPGA_VIRTUAL_TARGET
+#define CONFIG_DESIGNWARE_ETH          1
+#endif
+
+#ifdef CONFIG_DESIGNWARE_ETH
+#define CONFIG_EMAC0_BASE              SOCFPGA_EMAC0_ADDRESS
+#define CONFIG_EMAC1_BASE              SOCFPGA_EMAC1_ADDRESS
+/* console support for network */
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_NET
+#define CONFIG_CMD_PING
+/* designware */
+#define CONFIG_NET_MULTI
+#define CONFIG_DW_ALTDESCRIPTOR
+#define CONFIG_DW_SEARCH_PHY
+#define CONFIG_MII
+#define CONFIG_PHY_GIGE
+#define CONFIG_DW_AUTONEG
+#define CONFIG_AUTONEG_TIMEOUT         (15 * CONFIG_SYS_HZ)
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL
+#define CONFIG_PHY_MICREL_KSZ9021
+/* EMAC controller and PHY used */
+#define CONFIG_EMAC_BASE               CONFIG_EMAC1_BASE
+#define CONFIG_EPHY_PHY_ADDR           CONFIG_EPHY1_PHY_ADDR
+#define CONFIG_PHY_INTERFACE_MODE      PHY_INTERFACE_MODE_RGMII
+#endif /* CONFIG_DESIGNWARE_ETH */
+
+/*
  * L4 Watchdog
  */
 #define CONFIG_HW_WATCHDOG