e551ca1318
Since4095fac72b("loader: move some common dri3 functions out of dri3 loader") the new folder has been created, and since950dac6e6c("x11: Add an x11_xlib_display_is_thread_safe() helper") it's also used by vulkan x11, so adding it to the core rules. Fixes:4095fac72b("loader: move some common dri3 functions out of dri3 loader") Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36705>