sama5d3xek: support larger than 4G nand flash

Signed-off-by: Josh Wu <josh.wu@atmel.com>

board/atmel/sama5d3xek/sama5d3xek.c

@@ -131,7 +131,8 @@ static void sama5d3xek_lcd_hw_init(void)
 
 void lcd_show_board_info(void)
 {
-	ulong dram_size, nand_size;
+	ulong dram_size;
+	uint64_t nand_size;
 	int i;
 	char temp[32];
 
@@ -150,7 +151,7 @@ void lcd_show_board_info(void)
 	for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
 		nand_size += nand_info[i].size;
 #endif
-	lcd_printf("%ld MB SDRAM, %ld MB NAND\n",
+	lcd_printf("%ld MB SDRAM, %lld MB NAND\n",
 		   dram_size >> 20, nand_size >> 20);
 }
 #endif /* CONFIG_LCD_INFO */