unix/modtermios: Fix output speed setter in tcsetattr.
unix/modtermios: Fix output speed setter in tcsetattr.

The input speed was being set twice and the output speed was not set.

adafruit/circuitpython,trezor/micropython,trezor/micropython,kerneltask/micropython,trezor/micropython,henriknelson/micropython,pozetroninc/micropython,pramasoul/micropython,tobbad/micropython,pramasoul/micropython,henriknelson/micropython,selste/micropython,selste/micropython,trezor/micropython,tobbad/micropython,bvernoux/micropython,henriknelson/micropython,pozetroninc/micropython,tobbad/micropython,adafruit/circuitpython,MrSurly/micropython,adafruit/circuitpython,pramasoul/micropython,bvernoux/micropython,tobbad/micropython,adafruit/circuitpython,bvernoux/micropython,kerneltask/micropython,bvernoux/micropython,henriknelson/micropython,MrSurly/micropython,henriknelson/micropython,MrSurly/micropython,pramasoul/micropython,MrSurly/micropython,kerneltask/micropython,pozetroninc/micropython,selste/micropython,pozetroninc/micropython,bvernoux/micropython,trezor/micropython,tobbad/micropython,kerneltask/micropython,pozetroninc/micropython,pramasoul/micropython,MrSurly/micropython,adafruit/circuitpython,selste/micropython,selste/micropython,kerneltask/micropython,adafruit/circuitpython