Add USART2 for Octopus, set default fan PWM to 1Khz#22314

Merged

thinkyhead merged 2 commits intoMarlinFirmware:bugfix-2.0.xfrom

bigtreetech:octopus

Jul 9, 2021

Commits on Jul 8, 2021

enable usart2 for octopus and set the default PWM of fan to 1Khz
bigtreetech
committed

Commits on Jul 9, 2021

Merge remote-tracking branch 'upstream/bugfix-2.0.x' into pr/22314
thinkyhead
committed