Query a serial number of USB device from Sysfs
Query a serial number of USB device from Sysfs

Tested on Linux with the USB (FTDI and TI) serial ports
using Qt4

Change-Id: I8c088bf8b6fe440565cc37538ca7ef029651fb61
Reviewed-by: Sergey Belyashov <8871b4c2d635fca691211507eadbac3d0bc2695a@gmail.com>

RoadWorksSoftware/QtSerialPort-OS2,RoadWorksSoftware/QtSerialPort-OS2