Flipp3r

Move hw-locks to new mutex API in multiple steps to keep diffs readable.  The
users of hw-locks are **not** ported to the new-semantics; this needs to be
done as a follow up.  One patch is included, porting the MAX30001 driver in
commit 6da4644e ("chore(max30001): Port to new mutex and hw-lock APIs").

See merge request card10/firmware!356