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/Total5200.h b/include/configs/Total5200.h
index 75d1985..9a75848 100644
--- a/include/configs/Total5200.h
+++ b/include/configs/Total5200.h
@@ -268,6 +268,7 @@
  * Ethernet configuration
  */
 #define CONFIG_MPC5xxx_FEC	1
+#define CONFIG_MPC5xxx_FEC_SEVENWIRE
 /* dummy, 7-wire FEC does not have phy address */
 #define CONFIG_PHY_ADDR		0x00