omxvideoenc: Fix compiler warning
omxvideoenc: Fix compiler warning

gstomxvideoenc.c: In function ‘gst_omx_video_enc_fill_buffer’:
  CC       libgstomx_la-gstomxaacdec.lo
gstomxvideoenc.c:1316:27: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 8 has type ‘OMX_U32 {aka long unsigned int}’ [-Wformat=]
     GST_LOG_OBJECT (self, "Matched strides - direct copy %u bytes",
                           ^
         outbuf->omx_buf->nFilledLen);
         ~~~~~~~~~~~~~~~~~~

varunkumara/test-repo,varunkumara/test-repo,varunkumara/test-repo,GStreamer/gst-omx,CapOM/gst-omx,GStreamer/gst-omx,GStreamer/gst-omx,CapOM/gst-omx,CapOM/gst-omx