MFC r323785

MFC r323785
  Sync with amd64/arm/arm64/i386/mips pmap change r288256:

  Exploit r288122 to address a cosmetic issue.  Since PV chunk pages don't
  belong to a vm object, they can't be paged out.  Since they can't be paged
  out, they are never enqueued in a paging queue.  Nonetheless, passing
  PQ_INACTIVE to vm_page_unwire() creates the appearance that these pages
  are being enqueued in the inactive queue.  As of r288122, we can avoid
  this false impression by passing PQ_NONE.