Merge remote-tracking branch 'remotes/armbru/tags/pull-misc-2018-12-20' into staging

Miscellaneous patches for 2018-12-20

# gpg: Signature made Thu 20 Dec 2018 09:36:27 GMT
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-misc-2018-12-20:
  build: Remake config-host.mak when VERSION changes
  Clean up includes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>