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.
<LDD name="eusbc">
<ENDPOINTS>15</ENDPOINTS>
<SOFTCONNECT>Y</SOFTCONNECT>
<SELFPOWER>Y</SELFPOWER>
<REMOTEWAKEUP>N</REMOTEWAKEUP>
<HIGHSPEED>N</HIGHSPEED>
<FEATURES>0</FEATURES>
<MAXPOWER>50</MAXPOWER>
<EPSTALL>Y</EPSTALL>
<SPEC>0x200</SPEC>
<VID>0xE22</VID>
<PID>0x1110</PID>
<RELEASE>0x305</RELEASE>
<PRODUCT>H2Device</PRODUCT>
<INTERFACE>
<CLASS>255</CLASS>
<SUBCLASS>255</SUBCLASS>
<PROTOCOL>255</PROTOCOL>
<DESCRIPTOR>"T_USB Test Interface 0 (Default Setting 0)"</DESCRIPTOR>
<BANDWIDTH_OUT>3</BANDWIDTH_OUT>
<BANDWIDTH_IN>3</BANDWIDTH_IN>
<ENDPOINT type="BULK" direction="IN">
<SIZE>64</SIZE>
<DMA>Y</DMA>
<DOUBLEBUFF>Y</DOUBLEBUFF>
</ENDPOINT>
<ENDPOINT type="BULK" direction="OUT">
<SIZE>64</SIZE>
<DMA>Y</DMA>
<DOUBLEBUFF>Y</DOUBLEBUFF>
</ENDPOINT>
<ENDPOINT type="BULK" direction="IN">
<SIZE>64</SIZE>
<DMA>Y</DMA>
<DOUBLEBUFF>Y</DOUBLEBUFF>
</ENDPOINT>
<ENDPOINT type="BULK" direction="OUT">
<SIZE>64</SIZE>
<DMA>Y</DMA>
<DOUBLEBUFF>Y</DOUBLEBUFF>
</ENDPOINT>
</INTERFACE>
</LDD>