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/board/freescale/mpc8555cds/ddr.c b/board/freescale/mpc8555cds/ddr.c
index 78d73b0..d2ac6c4 100644
--- a/board/freescale/mpc8555cds/ddr.c
+++ b/board/freescale/mpc8555cds/ddr.c
@@ -8,8 +8,8 @@
 
 #include <common.h>
 
-#include <asm/fsl_ddr_sdram.h>
-#include <asm/fsl_ddr_dimm_params.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
 
 void fsl_ddr_board_options(memctl_options_t *popts,
 				dimm_params_t *pdimm,
diff --git a/board/freescale/mpc8555cds/mpc8555cds.c b/board/freescale/mpc8555cds/mpc8555cds.c
index e2093d1..de5f566 100644
--- a/board/freescale/mpc8555cds/mpc8555cds.c
+++ b/board/freescale/mpc8555cds/mpc8555cds.c
@@ -9,7 +9,7 @@
 #include <asm/processor.h>
 #include <asm/mmu.h>
 #include <asm/immap_85xx.h>
-#include <asm/fsl_ddr_sdram.h>
+#include <fsl_ddr_sdram.h>
 #include <ioports.h>
 #include <spd_sdram.h>
 #include <libfdt.h>