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/uc101.h b/include/configs/uc101.h
index 553eb25..87cb4e5 100644
--- a/include/configs/uc101.h
+++ b/include/configs/uc101.h
@@ -233,6 +233,7 @@
  * Ethernet configuration
  */
 #define CONFIG_MPC5xxx_FEC	1
+#define CONFIG_MPC5xxx_FEC_MII100
 #define CONFIG_PHY_ADDR		0x00
 #define CONFIG_MII		1