added trigger to ecal prescale

ecal/firmware/hdl/EcalDataProcessor.vhd

@@ -158,7 +158,7 @@ begin
   n_pre              <= ctrl_regs(0)(20 downto 17);
   n_post             <= ctrl_regs(0)(24 downto 21);
   n_data_out         <= to_integer(unsigned(n_pre) + unsigned(n_post)) + 1;
-  n_trig_prescale    <= ctrl_regs(0)(31 downto 25);
+  n_trig_prescale    <= to_integer(unsigned(ctrl_regs(0)(31 downto 25)));
 
   stat_regs(0)(8 downto 0) <= std_logic_vector(ttrig_block_lat_s);
   stat_regs(0)(9) <= data_ram_ena;