drm: tegra: Add maintainers entry

Add myself as the maintainer of the NVIDIA Tegra DRM driver.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
1 file changed