radv: bump conformance version to 1.2.0.0
https://www.khronos.org/conformance/adopters/conformant-products#submission_472
https://www.khronos.org/conformance/adopters/conformant-products#submission_473
https://www.khronos.org/conformance/adopters/conformant-products#submission_474
Fixes dEQP-VK.api.driver_properties.conformance_version.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3597>