Added the missed entry for commit of HADOOP-11541

hadoop-common-project/hadoop-common/CHANGES-HDFS-EC-7285.txt

@@ -4,4 +4,7 @@
     (Kai Zheng via umamahesh)
 
     HADOOP-11534. Minor improvements for raw erasure coders
-    ( Kai Zheng via vinayakumarb )
+    ( Kai Zheng via vinayakumarb )
+
+    HADOOP-11541. Raw XOR coder
+    ( Kai Zheng )