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
_Z20CreatePhysicalDevicev @ 1 NONAME
_ZN20DStaticPowerResourceC2ERK6TDesC8i @ 2 NONAME
_ZN20PowerResourceManager11GetClientIdEjR6TDesC8Rj @ 3 NONAME
_ZN20PowerResourceManager12AllocReserveEjhh @ 4 NONAME
_ZN20PowerResourceManager13GetClientNameEjjR5TDes8 @ 5 NONAME
_ZN20PowerResourceManager13GetResourceIdEjR6TDesC8Rj @ 6 NONAME
_ZN20PowerResourceManager14RegisterClientERjRK6TDesC810TOwnerType @ 7 NONAME
_ZN20PowerResourceManager15GetResourceInfoEjjPv @ 8 NONAME
_ZN20PowerResourceManager16DeRegisterClientEj @ 9 NONAME
_ZN20PowerResourceManager16GetResourceStateEjjiR16TPowerResourceCb @ 10 NONAME
_ZN20PowerResourceManager16GetResourceStateEjjiRiS0_ @ 11 NONAME
_ZN20PowerResourceManager18CancelNotificationEjjR26DPowerResourceNotification @ 12 NONAME
_ZN20PowerResourceManager19ChangeResourceStateEjjiP16TPowerResourceCb @ 13 NONAME
_ZN20PowerResourceManager19RequestNotificationEjjR26DPowerResourceNotification @ 14 NONAME
_ZN20PowerResourceManager19RequestNotificationEjjR26DPowerResourceNotificationii @ 15 NONAME
_ZN20PowerResourceManager26CancelAsyncRequestCallBackEjjR16TPowerResourceCb @ 16 NONAME
_ZN20PowerResourceManager26GetNumClientsUsingResourceEjjRj @ 17 NONAME
_ZN20PowerResourceManager28GetNumResourcesInUseByClientEjjRj @ 18 NONAME
_ZN20PowerResourceManager29GetInfoOnClientsUsingResourceEjjRjPv @ 19 NONAME
_ZN20PowerResourceManager31GetInfoOnResourcesInUseByClientEjjRjPv @ 20 NONAME
_ZN20PowerResourceManager33DeRegisterClientLevelFromResourceEjj @ 21 NONAME
_ZN20PowerResourceManager9ControlIOEjjPvS0_S0_ @ 22 NONAME
_ZN24DPowerResourceController13PostBootLevelEji @ 23 NONAME
_ZN24DPowerResourceController22RegisterStaticResourceEjP20DStaticPowerResource @ 24 NONAME
_ZN33DSimulatedPowerResourceController24CaptureIdleResourcesInfoEjjP5TPtr8 @ 25 NONAME
_ZN33DSimulatedPowerResourceController40CompleteResourceControllerInitialisationEv @ 26 NONAME
_ZNK20DStaticPowerResource7GetInfoEP5TDes8 @ 27 NONAME
_ZTI20DStaticPowerResource @ 28 NONAME
_ZTV20DStaticPowerResource @ 29 NONAME
_ZN24DPowerResourceController14InitControllerEv @ 30 NONAME
_ZN24DPowerResourceController30RegisterArrayOfStaticResourcesEjRPP20DStaticPowerResourcej @ 31 NONAME