HMI1001: fix build error, cleanup compiler warnings.
diff --git a/include/configs/hmi1001.h b/include/configs/hmi1001.h
index cfaf153..095b5f6 100644
--- a/include/configs/hmi1001.h
+++ b/include/configs/hmi1001.h
@@ -210,6 +210,7 @@
  */
 #define CONFIG_MPC5xxx_FEC	1
 #define CONFIG_PHY_ADDR		0x00
+#define CONFIG_MII		1		/* MII PHY management		*/
 
 /*
  * GPIO configuration