Driver/DDR: combine ccsr_ddr for 83xx, 85xx and 86xx

Fix ccsr_ddr structure to avoid using typedef. Combine DDR2 and DDR3
structure for 83xx, 85xx and 86xx.

Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c
index 45a7bcc..5d6b362 100644
--- a/drivers/ddr/fsl/util.c
+++ b/drivers/ddr/fsl/util.c
@@ -11,6 +11,7 @@
 #include <div64.h>
 
 #include <fsl_ddr.h>
+#include <fsl_immap.h>
 #include <asm/io.h>
 
 /* To avoid 64-bit full-divides, we factor this here */
@@ -134,7 +135,8 @@
 
 void board_add_ram_info(int use_default)
 {
-	ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_FSL_DDR_ADDR);
+	struct ccsr_ddr __iomem *ddr =
+		(struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR);
 
 #if	defined(CONFIG_E6500) && (CONFIG_NUM_DDR_CONTROLLERS == 3)
 	u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004);