The codebase has a bit of a mix of different multiline
comment styles. State a preference for the Linux kernel
style:
    /*
     * Star on the left for each line.
     * Leading slash-star and trailing star-slash
     * each go on a line of their own.
     */
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NCornelia Huck <cohuck@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180611141716.3813-1-peter.maydell@linaro.org