staging: vboxvideo: make a couple of symbols static
Module parameter vbox_modeset and structure vbox_bo_driver do not need to be in global scope and hence can be made static. Cleans up a couple of sparse warnings: symbol 'vbox_modeset' was not declared. Should it be static? symbol 'vbox_bo_driver' was not declared. Should it be static? Signed-off-by: NColin Ian King <colin.king@canonical.com> Acked-by: NHans de Goede <hdegoede@redhat.com> Acked-by: NMichael Thayer <michael.thayer@oracle.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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