Set the interface version implemented by the gr2d module. This allows
userspace to pass the correct command stream when programming the gr2d
module.
Reviewed-by: NDmitry Osipenko <digetx@gmail.com>
Tested-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>