Restore serial baud rate after reboot in board_teensy.c
Restore serial baud rate after reboot in board_teensy.c

The baud rate 134 is used to trigger a reboot for Teensy devices
in serial mode.

Some systems, such as Linux, may reuse settings for new tty
devices and trigger unintended reboots.

Koromix/ty,Koromix/ty,Koromix/tytools,Koromix/ty,Koromix/tytools,Koromix/tytools