[Linux] Serial ports management at startup

[sgallou]

At machine startup, Linux attributes serial ports links ttyXXX in a mysterious order. The consequence is for example that a peripheral previously connected to ttyUSB1 can be connected to ttyUSB0 after reboot, so won't work.
A solution should be to use some other criteria to autodetect peripheral and determine its associated ttyXXX link.
Use of Linux tools like lsusb, udevadm...