85xx: Handle eLBC difference w/36-bit physical

The eLBC only handles 32-bit physical address in systems with 36-bit
physical.  The previos generation of LBC handled 34-bit physical
address in 36-bit systems.  Added a new CONFIG option to convey
the difference between the LBC and eLBC.

Also added defines for XAM bits used in LBC for the extended 34-bit
support.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/configs/MPC8536DS.h b/include/configs/MPC8536DS.h
index 1898e26..e379d532 100644
--- a/include/configs/MPC8536DS.h
+++ b/include/configs/MPC8536DS.h
@@ -34,6 +34,7 @@
 #define CONFIG_MPC8536		1
 #define CONFIG_MPC8536DS	1
 
+#define CONFIG_FSL_ELBC		1	/* Has Enhanced localbus controller */
 #define CONFIG_PCI		1	/* Enable PCI/PCIE */
 #define CONFIG_PCI1		1	/* Enable PCI controller 1 */
 #define CONFIG_PCIE1		1	/* PCIE controler 1 (slot 1) */