Expose powerpmac ssh port

[LeandroMartinsdS]

Summary

Expose the SSH port used for communication between the pmac driver and the PowerPMAC controller to support simulator-based development.

Motivation

Developing and debugging the pmac driver currently requires access to physical PowerPMAC hardware. By exposing the SSH port, developers can connect the driver to a virtual PowerPMAC instance running in the PowerPMAC simulator. This makes it possible to test and iterate on driver features in a more flexible and accessible environment.

Changes

• Added configuration to expose the SSH port used by the driver.
• Enabled compatibility with the PowerPMAC simulator for virtual controller communication.

Next Steps

Instructions for using the driver with the simulator to be added.

[JamesOHeaDLS]

0 isn't a valid ssh port number. The check will need to be from 1 to 65535

[LeandroMartinsdS]

Any suggestion about documentation format and where to keep it?

[JamesOHeaDLS]

I think the documentation should live inside the pmac repo so it is available for anyone who clones the driver. I see there is already a docs folder. I would keep the instructions in markdown as this is accessible without requiring other software to read it