stm32/mboot: Adjust user-reset-mode timeout so it ends with mode=1.
stm32/mboot: Adjust user-reset-mode timeout so it ends with mode=1.

If the user button is held down indefinitely (eg unintenionally, or because
the GPIO signal of the user button is connected to some external device)
then it makes sense to end the reset mode cycle with the default mode of
1, which executes code as normal.

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