DEVELOPERS: Add Ryan Barnett for opkg and opkg-utils

Signed-off-by: Ryan Barnett <ryan.barnett@rockwellcollins.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit c994860de5431bda81569eb0e745bdb4339b195f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -2135,6 +2135,8 @@ F:	package/atftp/
 F:	package/c-periphery/
 F:	package/miraclecast/
 F:	package/python-pyasn/
+F:	package/opkg/
+F:	package/opkg-utils/
 F:	package/python-pysnmp/
 F:	package/python-pysnmp-mibs/
 F:	package/python-tornado/