[MMCFlash] 73 Module, Mercedes MED17\EDC17

Identification, map area reading/writing, full flash writing, virtual reading checksum correction, error reading/deleting.

MED17: virtual reading only. Map area writing for tuned files. Stock files can be written in boot and code from the virtual reading database.

EDC17: vitual and real reading of map area. Map area writing for tuned files. Stock files can be written in boot and code from the virtual reading database.