kmsro: try to use only compatible render-capable devices

kmsro: try to use only compatible render-capable devices

Since commit "pipe-loader: add
pipe_loader_get_compatible_render_capable_device_fd()", we have a
function to query a render-only driver that is available and is
compatible with the KMS-only device.

So start to use it, instead of selecting whatever render-only driver is
available to use.

Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24825>