various corev-dv fixes for NMI, PMA and bus errors (!998) · Merge requests · OpenHW Group / backup-20241120 / core-v-verif

Created by: strichmo

Restored NMI handler to corev-dv. This was somehow dropped in an earlier checkin.
@silabs-hfegran I simplified the linker scripts with respect to NMI. This seems to be stable in random simulations but please take a look.
Rework some of NMI RVVI driver code. This is incomplete as some RVFI updates will be necessary (nmip RVFI).
Add corev-dv bus error tests
Even thought this bus error code is not completely working, I would like to PR this in to cv32e40x/dev to generate testcases for the design team and enable some RVFI testing for new features required

various corev-dv fixes for NMI, PMA and bus errors