wifi module: add mhz and ghz frequency placeholders (#1574)
wifi module: add mhz and ghz frequency placeholders (#1574)


Andrwe/py3status,ultrabug/py3status,ultrabug/py3status,Andrwe/py3status,valdur55/py3status,ultrabug/py3status,valdur55/py3status,valdur55/py3status