Silabs robin/pr/master merge 220118

Created by: silabs-robin

Here is the merge of {cv32e40p/release, cv32e40x/release, cv32e40s/release, 40x->40s manual merge} into master.

It does not pass all rel_checks yet. 40x passes, but sporadically don't 40s had 2 failures in the last run (cv32e40s_csr_access_test, cv32e40s_readonly_csr_access_test). 40p has (consistently) 2 failures (corev_rand_debug_single_step twice). The 40x/40s failures are ok as these are both WIP. The 40p I would like to request some help with debugging.

Before merge, we should fix the 40p failures, review the 40x->40s manual merge, review that we accept the current 40x/40s failures, and review the overall diff/commitlog of the whole merge. @MikeOpenHWGroup @silabs-hfegran @silabs-mateilga

If it helps review, use github's compare feature on the step-wise branches I used for this. That is, branch silabs-robin/pr/master_merge_220118, .../master_merge_220118_40p, ..., .../master_merge_220118_40p_40x_40s_x2s. For example, here is the diff of my manual 40x->40s merging.