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
_Z11SessionSendiiPvP14TRequestStatus @ 1 NONAME
_Z13SessionCreateRK6TDesC8iPK15TSecurityPolicyi @ 2 NONAME
_Z13SetSessionPtriPKv @ 3 NONAME
_Z15SessionSendSynciiPvP14TRequestStatus @ 4 NONAME