ofw_path_to_handle
if (ofw_path_to_handle(devspec, ofwtype, &rem_path) == -1)
phandle_t ofw_path_to_handle(const char *ofwpath, const char *want_type, const char **path);
return (ofw_path_to_handle(devspec, devsw->dv_name, &path) != -1);
return (ofw_path_to_handle(devspec, devsw->dv_name, &path) != -1);