Cv32e40x/merge rel to dev 18 manual

Created by: silabs-robin

Merge procedure, 40x rel->dev.

Passes "rel_check" except for 1 failure in "cv32e40x_csr_access_test" (same as before).

(The title says "manual" because of ci troubles, but there was no merge conflict and I simply had to run some commands my self.)