tree-wide: replace MAYBE_UNUSED with ASSERTED

Suggested-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

src/intel/vulkan/anv_queue.c

@@ -637,7 +637,7 @@ anv_wait_for_bo_fences(struct anv_device *device,
                .tv_nsec = abs_timeout_ns % NSEC_PER_SEC,
             };
 
-            MAYBE_UNUSED int ret;
+            ASSERTED int ret;
             ret = pthread_cond_timedwait(&device->queue_submit,
                                          &device->mutex, &abstime);
             assert(ret != EINVAL);