mtd: dataflash: Use ULL suffix for 64-bit constants

With gcc 4.1.2 when compiling for 32-bit:

    drivers/mtd/devices/mtd_dataflash.c:736: warning: integer constant is too large for ‘long’ type
    drivers/mtd/devices/mtd_dataflash.c:737: warning: integer constant is too large for ‘long’ type

Add the missing "ULL" suffixes to fix this.

Fixes: 67e4145e ("mtd: dataflash: Add flash_info for AT45DB641E")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>