Add CONFIG_MII_INIT support to related boards

Replace CONFIG_8xx and CONFIG_MCF532x to CONFIG_MII_INIT in
cmd_init.c. Add CONFIG_MII_INIT to board configuration files
that use mii_init() in cmd_init.c.

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Acked-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/include/configs/TQM885D.h b/include/configs/TQM885D.h
index a254bcd..f075442 100644
--- a/include/configs/TQM885D.h
+++ b/include/configs/TQM885D.h
@@ -497,6 +497,7 @@
 
 #if defined(CONFIG_CMD_MII)
 #define CFG_DISCOVER_PHY
+#define CONFIG_MII_INIT	1
 #endif
 
 #define CONFIG_NET_RETRY_COUNT 1	/* reduce max. timeout before