Merge "init: fix first stage mount failure due to /dev/device-mapper not found" into oc-dev

    if (!GetRequiredDevices(&devices_partition_names, &need_dm_verity)) return false;

    if (need_dm_verity) {

        device_init("/sys/devices/virtual/misc/device-mapper",

                    [&](uevent* uevent) -> coldboot_action_t { return COLDBOOT_STOP; });

        const std::string dm_path = "/devices/virtual/misc/device-mapper";

        device_init(("/sys" + dm_path).c_str(), [&dm_path](uevent* uevent) -> coldboot_action_t {

            if (uevent->path == dm_path) return COLDBOOT_STOP;

            return COLDBOOT_CONTINUE;  // dm_path not found, continue to find it.

        });

    }

    bool success = false;