Revert "added a buffer at ZSF"

This reverts commit 65f70377.

Conflicts: common/firmware/hdl/EcalDataFilter.vhd

common/addr_table/eprocessor.xml

 <node description="EcalDataProcessor Control and Status" fwinfo="endpoint">
   <node id="DP" address="0x0" description="DataProcessor control and status" fwinfo="endpoint;width=1">   
     <node id="ctrl" address="0x0" description="control registers">
-      <node id="reset" mask="0x1" description="reset"/>
-      <node id="latency" mask="0x3fe" description="latency"/>
+      <node id="reset"           mask="0x1" description="reset"/>
+      <node id="latency"         mask="0x3fe" description="latency"/>
       <node id="trig_lat_offset" mask="0x7fc00" description="trigger latency offset"/>
     </node>
     <node id="stat" address="0x1" description="status">
-      <node id="latency" mask="0x1ff" description="latency"/>
+      <node id="latency"         mask="0x1ff" description="latency"/>
       <node id="trig_lat_offset" mask="0x3fe00" description="latency"/>
+      <node id="backpressure"    mask="0x40000" description="backpressure"/>
     </node>
   </node>
   <node id="dfilter"  address="0x40"  description="Data filter control and status" fwinfo="endpoint;width=6">
 		 <node id="bypass" address="0x0" mask="0x1" description="bypass zs filter logic"/>
+		 <node id="bypass_prescale" address="0x0" mask="0x1fffe" description="bypass trigger prescale"/>
 		 <node id="zs_sc" address="0x1" mode="block" size="32" description="zs filter registers"/>
   </node>
-    <node id="mon" address="0x80" description="Ecal data monitoring" fwinfo="endpoint;width=2"/>
 </node>