x600: Switch to CONFIG_PHYLIB

Now that the designware ethernet driver uses phylib we need to turn it
on here.

Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>

include/configs/x600.h

@@ -74,10 +74,9 @@
 /* Ethernet config options */
 #define CONFIG_MII
 #define CONFIG_DESIGNWARE_ETH
-#define CONFIG_DW_SEARCH_PHY
 #define CONFIG_NET_MULTI
+#define CONFIG_PHYLIB
 #define CONFIG_PHY_RESET_DELAY			10000		/* in usec */
-#define CONFIG_DW_AUTONEG
 #define CONFIG_PHY_ADDR		0	/* PHY address */
 #define CONFIG_PHY_GIGE			/* Include GbE speed/duplex detection */