DEVELOPERS: Add Nicolas Serafini for ofono

Signed-off-by: Nicolas Serafini <nicolas.serafini@sensefly.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -1730,6 +1730,7 @@ N:	Nicolas Serafini <nicolas.serafini@sensefly.com>
 F:	package/exiv2/
 F:	package/nvidia-tegra23/nvidia-tegra23-binaries/
 F:	package/nvidia-tegra23/nvidia-tegra23-codecs/
+F:	package/ofono/
 
 N:	Nikolay Dimitrov <nikolay.dimitrov@retrohub.org>
 F:	board/embest/riotboard/