Merge branch 'features' into docs-next

Andrea Parri dice:

  This series provides the script 'features-refresh.sh', which operates on
  the arch support status files, and it applies this script to refresh the
  status files in place; previous discussions about this series are at [1].

  [1] http://lkml.kernel.org/r/1523205027-31786-1-git-send-email-andrea.parri@amarulasolutions.com
      http://lkml.kernel.org/r/1522774551-9503-1-git-send-email-andrea.parri@amarulasolutions.com
      http://lkml.kernel.org/r/20180328122211.GA25420@andrea