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/MPC8572DS.h b/include/configs/MPC8572DS.h
index 332a0e3..a0f4fcc 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -36,6 +36,7 @@
 #define CONFIG_MP		1	/* support multiple processors */
 #define CONFIG_NUM_CPUS		2	/* Number of CPUs in the system */
 
+#define CONFIG_FSL_ELBC		1	/* Has Enhanced localbus controller */
 #define CONFIG_PCI		1	/* Enable PCI/PCIE */
 #define CONFIG_PCIE1		1	/* PCIE controler 1 (slot 1) */
 #define CONFIG_PCIE2		1	/* PCIE controler 2 (slot 2) */