TI DaVinci DM355: Add Config option for 64 bit Support

Adding the CONFIG_SYS_64BIT_VSPRINTF in the DM355 EVM config.
Without this option enabled while performing NAND operations we will get
wrong diagnostic messages.
Example if the MTD NAND driver find a bad block while erasing from
a certain address, it will say bad block skipped at 0x00000000.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

include/configs/davinci_dm355evm.h

@@ -69,6 +69,7 @@
 #define CONFIG_SYS_NAND_USE_FLASH_BBT
 #define CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST
 #define CONFIG_SYS_NAND_PAGE_2K
+#define CONFIG_SYS_64BIT_VSPRINTF	/* needed for nand_util.c */
 
 #define CONFIG_SYS_NAND_LARGEPAGE
 #define CONFIG_SYS_NAND_BASE_LIST	{ 0x02000000, }