cleanup and update license header

args_demo.py

args_logger.py

gen_bus.py

gen_c_config.py

gen_doc.py

gen_fpgamap_py.py

gen_hdl.py

gen_rom_mmap.py

gen_slave.py

py_args_lib/fpga.py

py_args_lib/peripheral.py

py_args_lib/peripheral_lib/args_errors.py

py_args_lib/peripheral_lib/base_object.py

py_args_lib/peripheral_lib/common_func.py

py_args_lib/peripheral_lib/constants.py

py_args_lib/peripheral_lib/field.py

py_args_lib/peripheral_lib/fifo.py

py_args_lib/peripheral_lib/ram.py

py_args_lib/peripheral_lib/register.py

qsys.reg