MAINTAINERS: Add myself to libopenh264enc

Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

MAINTAINERS

@@ -194,6 +194,7 @@ Codecs:
   libdavs2.c                            Huiwen Ren
   libgsm.c                              Michel Bardiaux
   libkvazaar.c                          Arttu Ylä-Outinen
+  libopenh264enc.c                      Martin Storsjo, Linjie Fu
   libopenjpeg.c                         Jaikrishnan Menon
   libopenjpegenc.c                      Michael Bradshaw
   libtheoraenc.c                        David Conrad