[Skip CI] Changing part number in user manual
Created by: jquevremont
We accelerate this action to stabilize the embedded part number for upcoming commits.
Consensus (not unanimity) on CV32A60MX for the embedded configuration. Indeed, the previous CV32E60X (or CV32E65X) part number does not reflect the CVA6 family name and is a real issue for Thales.
CV32A60MX will change to CV32A65MX is the configuration is upgraded with dual-issue.