
Replaces "PYB: soft reboot" with "MPY: soft reboot", etc. Having a consistent prefix across ports reduces the difference between ports, which is a general goal. And this change won't break pyboard.py because that tool only looks for "soft reboot".
Replaces "PYB: soft reboot" with "MPY: soft reboot", etc. Having a consistent prefix across ports reduces the difference between ports, which is a general goal. And this change won't break pyboard.py because that tool only looks for "soft reboot".