[TASK] Make several AXI feature optional

[JeanRochCoulon]

Is there an existing CVA6 task for this?

• [x] I have searched the existing task issues

Task Description

CVA6 AXI supports many features, removing unused features would reduce verification.

Required Changes

Modify RTL to remove some AXI features. Specification should be updated/approved first.

Current Status

TODO

Risks

It is not a trivial RTL modification

Prerequisites

AXI expertize

KPI (KEY Performance Indicators)

none

Description of Done

modification merged in master branch

Associated PRs

No response

[jquevremont]

On hold until we have someone for that task.