dcmi: asset-tag: Add API to write asset tag to the DBUS object

Change-Id: Ia4bf3f99a865617535c65a023c8e697792cd43b4
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
diff --git a/dcmihandler.hpp b/dcmihandler.hpp
index c64e56b..de0d82f 100644
--- a/dcmihandler.hpp
+++ b/dcmihandler.hpp
@@ -96,6 +96,12 @@
  */
 std::string readAssetTag();
 
+/** @brief Write the asset tag to the asset tag DBUS property
+ *
+ *  @param[in] assetTag - Asset Tag to be written to the property.
+ */
+void writeAssetTag(const std::string& assetTag);
+
 } // namespace dcmi
 
 #endif