[Arch] define default CCFF model in ql bank example architecture that uses shift registers
<port type="output" prefix="inpad" lib_name="Y" size="1"/>
</circuit_model>
<!-- The following flip-flop is used to build the shift register chains for configuring memory banks -->
- <circuit_model type="ccff" name="BL_DFFRQ" prefix="BL_DFFRQ" spice_netlist="${OPENFPGA_PATH}/openfpga_flow/openfpga_cell_library/spice/dff.sp" verilog_netlist="${OPENFPGA_PATH}/openfpga_flow/openfpga_cell_library/verilog/dff.v">
+ <circuit_model type="ccff" name="BL_DFFRQ" prefix="BL_DFFRQ" spice_netlist="${OPENFPGA_PATH}/openfpga_flow/openfpga_cell_library/spice/dff.sp" verilog_netlist="${OPENFPGA_PATH}/openfpga_flow/openfpga_cell_library/verilog/dff.v" is_default="true">
<design_technology type="cmos"/>
<input_buffer exist="true" circuit_model_name="INVTX1"/>
<output_buffer exist="true" circuit_model_name="INVTX1"/>
