fix Creality v4.3.1 pins

[Chicos123]

Description

fix Creality v4.3.1 pins

Pinout source from
https://github.com/ginge/Ender6/blob/main/README.md

https://docs.google.com/spreadsheets/d/1DYhh9fwLnvZzuNvMoBen9Dl68KN-4TWkbO94lJ4iwe4

tested by my own board

Requirements

Benefits

creality v4.3.1 board pins fix

Configurations

Related Issues

[thinkyhead]

Thanks for your contribution! Unfortunately we can't accept PRs directed at release branches. We make patches to the bugfix branches and only later do we push them out as releases. Please redo this PR starting with the bugfix-2.0.x branch and be careful to target bugfix-2.0.x when resubmitting the PR.

It may help to set your fork's default branch to bugfix-2.0.x.

See http://marlinfw.org/docs/development/getting_started_pull_requests.html for full instructions.

[thinkyhead]

The linked spreadsheet actually shows the X and Y pins as what we already have, but does have different E0 pins than we currently have… Is the spreadsheet wrong?

name | 4.3.1
-----|-------------
PB8  | X_STEP_PIN
PB7  | X_DIR_PIN
PC2  | Y_STEP_PIN
PB9  | Y_DIR_PIN
PB3  | E0_STEP_PIN
PB4  | E0_DIR_PIN

[thinkyhead]

Reposted, with corrections, as #22704.