MAX_SIZE should be increased to 256

[fpgadeveloper]

MAX_SIZE determines the number of bytes read from the FMC EEPROM (IPMI FRU data). The FRU data can take up to 256 bytes, a limit imposed by the 8-bit address EEPROM imposed by the standard. When only 32 bytes are read, the values for VADJ voltage will not be reached on some FMC cards, leading to failure to enable VADJ to the correct voltage.