net: removed board-specific CONFIGs from MPC5xxx FEC driver

Added new CONFIG options for the three type of MAC-PHY interconnect and
applied them all relevant board config files

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/include/configs/TOP5200.h b/include/configs/TOP5200.h
index 046948e..50197f4 100644
--- a/include/configs/TOP5200.h
+++ b/include/configs/TOP5200.h
@@ -312,7 +312,7 @@
  * Ethernet configuration
  */
 #define CONFIG_MPC5xxx_FEC	1
-#define CONFIG_FEC_10MBIT	1		/* Workaround for FEC 100Mbit problem */
+#define CONFIG_MPC5xxx_FEC_MII10	/* Workaround for FEC 100Mbit problem */
 #define	CONFIG_PHY_ADDR		0x1f
 #define	CONFIG_PHY_TYPE		0x79c874
 /*