Add program_plls_commandline() so that one can program PLLs from command line

I am preparing a script for non-expert to go through PCIe40 firmware downloading and following procedures. In the script, I'd like to program PLLs on PCIe40. $ python -c "import pll_status_small; pll_status_small.program_plls_commandline(0)"

I copied program_plls() function and replace win with print(). Since some variables are duplicated in other functions, I prepared a class to contain those variables so that the variables are taken from this class in future update.