Driver/DDR: Moving Freescale DDR driver to a common driver

Freescale DDR driver has been used for mpc83xx, mpc85xx, mpc86xx SoCs.
The similar DDR controllers will be used for ARM-based SoCs.

Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/include/configs/MPC8572DS.h b/include/configs/MPC8572DS.h
index c751144..afb195f 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -106,7 +106,7 @@
 
 /* DDR Setup */
 #define CONFIG_VERY_BIG_RAM
-#define CONFIG_FSL_DDR2
+#define CONFIG_SYS_FSL_DDR2
 #undef CONFIG_FSL_DDR_INTERACTIVE
 #define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup */
 #define CONFIG_DDR_SPD