implement On-Chip-Flash with Hex file

Hi,

Please check this documentation https://www.intel.com/content/www/us/en/docs/programmable/683180/18-0/flash-initialization-files.html

If the total data size in the initialization file is less the maximum UFM size, the IP core retains blank data (all 1's).

If the total data size in the initialization file is larger than the maximum UFM size, the IP core ignores the extra data.

Thanks,

Regards,

Sheng