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>

common/cmd_mii.c

@@ -306,7 +306,7 @@ int do_mii (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		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