resource_find_free_secondary_pipe_legacy
hsplit_pipe = resource_find_free_secondary_pipe_legacy(&context->res_ctx, pool, pipe);
struct pipe_ctx *resource_find_free_secondary_pipe_legacy(
struct pipe_ctx *idle_pipe = resource_find_free_secondary_pipe_legacy(res_ctx, pool, head_pipe);
struct pipe_ctx *sec_dpp_pipe = resource_find_free_secondary_pipe_legacy(res_ctx, pool, otg_master);
struct pipe_ctx *idle_pipe = resource_find_free_secondary_pipe_legacy(res_ctx, pool, head_pipe);