Merge old and new project constraints

Update top/fe-link-histogram/firmware/ucf/emp_project_constraints_old.tcl, top/fe-link-histogram/firmware/ucf/emp_project_constraints.tcl files

top/fe-link-histogram/firmware/hdl/emp_payload.vhd

@@ -62,7 +62,7 @@ constant N_CTRL_HIST           : integer := 2;
 constant N_STAT_HIST           : integer := 2;
 
 constant bin_width             : integer := 32;
-constant input_width           : integer := 11;
+constant input_width           : integer := 10;
 
 signal status_registers        : ipb_reg_v(N_STAT_HIST - 1 downto 0) := (others => (others => '0'));
 signal control_registers       : ipb_reg_v(N_CTRL_HIST - 1 downto 0) := (others => (others => '0'));