[Feature] Fota added query interface and updated DEMO

Change-Id: Ie70eee8eb5dc7742c48060c88da9dd2aaeab0425
diff --git a/src/lynq/lib/liblynq-fota/include/iot_rock.h b/src/lynq/lib/liblynq-fota/include/iot_rock.h
index d6f0a2c..fbeba75 100755
--- a/src/lynq/lib/liblynq-fota/include/iot_rock.h
+++ b/src/lynq/lib/liblynq-fota/include/iot_rock.h
@@ -128,6 +128,7 @@
 ssize_t lynq_nand_read(int fd, void *buf, size_t count);

 ssize_t lynq_nand_write(int fd, void *buf, size_t count);

 int lynq_nand_close(int fd);

+int lynq_get_upgrade_status(void);

 #endif