Adds two more ethernet interface to 83xx

Added as a convenience for other platforms that uses MPC8360 (has 8 UCC).
Six eth interface is chosen because the platform I am using combines
UCC1&2 and UCC3&4 as 1000 Eth and the other four UCCs as 10/100 Eth.

Signed-off-by: Richard Retanubun <RichardRetanubun@RugggedCom.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

common/env_common.c

@@ -91,6 +91,12 @@ uchar default_environment[] = {
 #ifdef	CONFIG_ETH3ADDR
 	"eth3addr="	MK_STR(CONFIG_ETH3ADDR)		"\0"
 #endif
+#ifdef	CONFIG_ETH4ADDR
+	"eth4addr="	MK_STR(CONFIG_ETH4ADDR)		"\0"
+#endif
+#ifdef	CONFIG_ETH5ADDR
+	"eth5addr="	MK_STR(CONFIG_ETH5ADDR)		"\0"
+#endif
 #ifdef	CONFIG_IPADDR
 	"ipaddr="	MK_STR(CONFIG_IPADDR)		"\0"
 #endif