86xx: Make dram_size a phys_size_t

It's currently a long and should be phys_size_t.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd.c b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
index 8d3b822..02dc744 100644
--- a/board/freescale/mpc8610hpcd/mpc8610hpcd.c
+++ b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
@@ -37,7 +37,7 @@
 #include "../common/pixis.h"
 
 void sdram_init(void);
-long int fixed_sdram(void);
+phys_size_t fixed_sdram(void);
 void mpc8610hpcd_diu_init(void);
 
 
@@ -117,7 +117,7 @@
 phys_size_t
 initdram(int board_type)
 {
-	long dram_size = 0;
+	phys_size_t dram_size = 0;
 
 #if defined(CONFIG_SPD_EEPROM)
 	dram_size = fsl_ddr_sdram();
@@ -140,7 +140,7 @@
  * Fixed sdram init -- doesn't use serial presence detect.
  */
 
-long int fixed_sdram(void)
+phys_size_t fixed_sdram(void)
 {
 #if !defined(CONFIG_SYS_RAMBOOT)
 	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;