radv: set info->family_overridden when RADV_FORCE_FAMILY is used

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31841>

src/amd/vulkan/radv_physical_device.c

@@ -2095,6 +2095,7 @@ radv_physical_device_try_create(struct radv_instance *instance, drmDevicePtr drm
    pdev->master_fd = master_fd;
    pdev->local_fd = fd;
    pdev->ws->query_info(pdev->ws, &pdev->info);
+   pdev->info.family_overridden = drm_device == NULL;
 
    if (drm_device) {
       pdev->addrlib = ac_addrlib_create(&pdev->info, &pdev->info.max_alignment);