CHANGELOG.md: update release date

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 211c3ce..e711f09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 
-## [2.0.2]
+## [2.0.2] - 2019-02-04
 ### Fixed
 - Fixed NULL ptr issues in Esys_HMAC_Start, Esys_HierarchyChangeAuth and Esys_NV_ChangeAuth
 - Fixed NULL ptr issue in sequenceHandleNode