drm/radeon: add GET_PARAM/INFO support for Z pipes
Needed for occlusion queries on rv530 chips. Signed-off-by: NAlex Deucher <alexdeucher@gmail.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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Needed for occlusion queries on rv530 chips. Signed-off-by: NAlex Deucher <alexdeucher@gmail.com> Signed-off-by: NDave Airlie <airlied@redhat.com>