Update CVA6 Architecture overview Figure

[YazanHussnain-10x]

This PR includes an updated version of the CVA6 Architecture Overview figure. The following changes have been made to the figure:

• The Re-aligner has been moved to the Frontend.
• Cache Subsystem (I$ and D$) have been moved outside the pipeline.
• Signals have been added in the ID, Issue, and Commit stages, with labels for clarification.
• An FPU has been added in the Execute stage.
• The Division logic has been highlighted inside the Mult module.

These updates were made with the intention of preserving the originality of the figure.

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[zarubaf]

Looks amazing! Any chance we can also add the vector source file so that people can adapt it in case things change?

[fatimasaleem]

Looks amazing! Any chance we can also add the vector source file so that people can adapt it in case things change?

Sure, we should add that, @YazanHussnain-10x can you add the source file in the same folder as well?

[YazanHussnain-10x]

I added the vector file

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[zarubaf]

Great that it is a drawio file.
Small hint: You can save the drawio as xyz.drawio.png that results in a pseudo png that can be displayed in the documentation and can be edited by drawio (so only one source file necessary). And I can also recommend the drawio vscode extension in case you don't know that one already :-)

[JeanRochCoulon]

Hi @YazanHussnain-10x
Little feedbacks. The arrows are not all drawn with the same format: decoded instuction and valid for instance get the new format and signals from frontend are in old format. It would be great to uniformize the format. Cheers

[YazanHussnain-10x]

@zarubaf, @JeanRochCoulon
Thanks for the suggestions and feedback. I have updated the figure and added the .drawio.png file.