I think we should merge the two folders: scripts/l8_lbw1 and scripts/l8_lbw8
Reasons:
  (1) These two modes actually use the same FPGA design. The only difference is the value we write to register 'mode_sel'
  (2) Thse two modes use mostly the same functions - mixer configuration functions, debug functions, etc.
  (3) The two function collections (mixercic_funcs.py, l8_debug.py) are the same, basically. Keeping two copies make it hard to maintain.