DXVA2: don't use the decoder if the profile is not supported

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/Makefile.am

@@ -342,7 +342,7 @@ endif
 
 libdxva2_plugin_la_SOURCES = \
 	video_chroma/copy.c video_chroma/copy.h \
-	codec/avcodec/dxva2.c
+	codec/avcodec/dxva2.c codec/h264_nal.c codec/h264_nal.h
 libdxva2_plugin_la_LIBADD = -lole32 -lshlwapi -luuid
 if HAVE_AVCODEC_DXVA2
 codec_LTLIBRARIES += libdxva2_plugin.la