erlang-p1-xmpp: new package

Signed-off-by: Johan Oudinet <johan.oudinet@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/DEVELOPERS b/DEVELOPERS
index 231e733..f86e5c6 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -871,6 +871,7 @@
 F:	package/erlang-p1-tls/
 F:	package/erlang-p1-utils/
 F:	package/erlang-p1-xml/
+F:	package/erlang-p1-xmpp/
 F:	package/erlang-p1-yaml/
 F:	package/erlang-p1-zlib/
 F:	package/nginx-dav-ext/