85xxCDS: Add make targets for legacy systems.

The PCI ID select values on the Arcadia main board differ depending
on the version of the hardware. The standard configuration supports
Rev 3.1. The legacy target supports Rev 2.x.

Signed-off-by Randy Vinson <rvinson@mvista.com>

cpu/mpc85xx/pci.c

diff --git a/cpu/mpc85xx/pci.c b/cpu/mpc85xx/pci.c
index 3c1a323..db09e45 100644
--- a/cpu/mpc85xx/pci.c
+++ b/cpu/mpc85xx/pci.c
@@ -142,7 +142,7 @@
 		u8 header_type;
 
 		pci_hose_read_config_byte(hose,
-					  PCI_BDF(0,17,0),
+					  PCI_BDF(0,BRIDGE_ID,0),
 					  PCI_HEADER_TYPE,
 					  &header_type);
 	}