Add the presence of ARIA to the change log.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2926)

CHANGES

diff --git a/CHANGES b/CHANGES
index b6d5332..f25c206 100644
--- a/CHANGES
+++ b/CHANGES
@@ -26,6 +26,9 @@
      are no longer allowed.
      [Emilia Käsper]
 
+  *) Add support for ARIA
+     [Paul Dale]
+
   *) Add support for SipHash
      [Todd Short]