freakz/nwk: Clean the code format

signed-off-by: Zhong Hongbo<bocui107@gmail.com>
freak/avr-ravenusb: Change the directory name of the CDC to cdc

signed-off-by: Zhong Hongbo<bocui107@gmail.com>
freakusb/avr-ravenusb: Clean usb code format

signed-off-by: Zhong Hongbo <bocui107@gmail.com>
freakz/avr-ravenusb: Test freakz on the avr-ravenusb

signed-off-by: Zhong Hongbo <bocui107@gmail.com>
freakz/avr-ravenusb: Fix the compile fail

signed-off-by: Zhong Hongbo <bocui107@gmail.com>
freakz/mac: Clean mac code format

signed-off-by: Zhong Hongbo <bocui107@gmail.com>