panfrost: enable robust_buffer_access_behavior

This is already supported on at v6 and later, so let's enable it.

Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31868>

src/gallium/drivers/panfrost/pan_screen.c

@@ -677,6 +677,7 @@ panfrost_init_screen_caps(struct panfrost_screen *screen)
    caps->surface_sample_count = true;
 
    caps->device_reset_status_query = dev->arch >= 10;
+   caps->robust_buffer_access_behavior = dev->arch >= 6;
 
    caps->sampler_view_target = true;
    caps->clip_halfz = true;