[rv_core_ibex] V1 Signoff

[msfschaffner]

Description

Ensure V1 signoff criteria are fulfilled after focus area changes have landed.

[andreaskurth]

@GregAC @hcallahan-lowrisc: Looking through V1 checklist items, I think only TESTPLAN_COMPLETED needs a closer look, right? Then, as described in the D2 signoff analysis, there were only 3 changes with actual RTL impact: two security fixes (lowRISC/ibex@8ec0c6f1 and lowRISC/ibex@35bbdb7b) and the removal of the S&P layer from scrambling (lowRISC/ibex@56413ecf). AFAIK from a functionality perspective, all these changes are well covered by existing tests, so the testplan doesn't need to be extended.

If you agree, I suggest closing this as completed.

[GregAC]

@andreaskurth I agree, so V1 criteria remain fulfilled.