Increase number of FE modules to six for a full station

Update top/firmware/hdl/emp_project_decl.vhd, top/firmware/hdl/link_maps.vhd, top/addr_table/emp_payload.xml

replacements/emp-fwk/components/top/addr_table/top_emp.xml

@@ -3,7 +3,7 @@
     <node id="ctrl" module="file://emp_ctrl.xml" address="0x200"/>
     <node id="ttc" module="file://emp_ttc.xml" address="0x400"/>
     <node id="datapath" module="file://emp_datapath.xml" address="0x2000"/>
-    <node id="eth10g" module="file://emp_eth10g.xml" address="0x4000"/>
+    <node id="eth10g" module="file://emp_eth10g_interface.xml" address="0x4000"/>
     <node id="freq" module="file://ipbus_freq_ctr.xml" address="0x40000000"/>
     <node id="payload" module="file://emp_payload.xml" address="0x80000000" fwinfo="endpoint;width=31"/>
 </node>