Fix macro typo in common/cmd_mii.c

This typo was introduced in commit 233a8bcd94997f3f345833a3b82e836222f2a206.  I
actually applied the wrong patch.

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/common/cmd_mii.c b/common/cmd_mii.c
index 8ca5af5..fa753dd 100644
--- a/common/cmd_mii.c
+++ b/common/cmd_mii.c
@@ -306,7 +306,7 @@
 		return 1;
 	}
 
-#if defined(CONFIG_8xx) || defined(CONFIG_MCF532x || defined(CONFIG_MII_INIT))
+#if defined(CONFIG_8xx) || defined(CONFIG_MCF532x) || defined(CONFIG_MII_INIT)
 	mii_init ();
 #endif