add flushTx()

Signed-off-by: Andrea Corna <andrea.corna.ac.91@gmail.com>
risolti conflitti merge

Signed-off-by: Andrea Corna <andrea.corna.ac.91@gmail.com>
add set_crc_width

Signed-off-by: Andrea Corna <andrea.corna.ac.91@gmail.com>
add get_crc_width and get_output_power

Signed-off-by: Andrea Corna <andrea.corna.ac.91@gmail.com>