Enhance the base/rom extension to generate the symbol file of the rom built.
The symbol file is placed in epoc32/rom/<baseport_name>, along with the rom log and final oby file.
EXPORTS
Read1 @ 1 NONAME
Read2 @ 2 NONAME
Read3 @ 3 NONAME
Read4 @ 4 NONAME
Read5 @ 5 NONAME
Read6 @ 6 NONAME
Read7 @ 7 NONAME
Read8 @ 8 NONAME
Read9 @ 9 NONAME
GetDataAddress @ 10 NONAME
GetSizeOfData @ 11 NONAME