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>

include/configs/hmi1001.h

diff --git a/include/configs/hmi1001.h b/include/configs/hmi1001.h
index 16b06cd..a81527e 100644
--- a/include/configs/hmi1001.h
+++ b/include/configs/hmi1001.h
@@ -215,6 +215,7 @@
  * Ethernet configuration
  */
 #define CONFIG_MPC5xxx_FEC	1
+#define CONFIG_MPC5xxx_FEC_MII100
 #define CONFIG_PHY_ADDR		0x00
 #define CONFIG_MII		1		/* MII PHY management		*/