intel: Rename "gen_" prefix used in common code to "intel_"

This patch renames functions, structures, enums etc. with "gen_"
prefix defined in common code.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9413>

src/intel/vulkan/anv_queue.c

@@ -831,7 +831,7 @@ anv_queue_submit_simple_batch(struct anv_queue *queue,
 
       memcpy(batch_bo->map, batch->start, size);
       if (!device->info.has_llc)
-         gen_flush_range(batch_bo->map, size);
+         intel_flush_range(batch_bo->map, size);
 
       submit->simple_bo = batch_bo;
       submit->simple_bo_size = size;