check_create — [GENERIC] create and write bbt(s) if necessary
MTD device structure
temporary buffer
descriptor for the good/bad block search pattern
The function checks the results of the previous call to read_bbt and creates / updates the bbt(s) if necessary Creation is necessary if no bbt was found for the chip/device Update is necessary if one of the tables is missing or the version nr. of one table is less than the other