parsers UPDATE notification children order irrelevant

Fixes #2080
diff --git a/src/parser_internal.h b/src/parser_internal.h
index 5b632a2..92412e2 100644
--- a/src/parser_internal.h
+++ b/src/parser_internal.h
@@ -61,6 +61,7 @@
 #define LYD_INTOPT_ANY              0x10    /**< Anydata/anyxml content is being parsed, there can be anything. */
 #define LYD_INTOPT_WITH_SIBLINGS    0x20    /**< Parse the whole input with any siblings. */
 #define LYD_INTOPT_NO_SIBLINGS      0x40    /**< If there are any siblings, return an error. */
+#define LYD_INTOPT_EVENTTIME        0x80    /**< Parse notification eventTime node. */
 
 /**
  * @brief Internal (common) context for YANG data parsers.