Fix NPDs in h263 decoder

Bug: 35269635
Test: decoded PoC with and without patch
Change-Id: I636a14360c7801cc5bca63c9cb44d1d235df8fd8
(cherry picked from commit 2ad2a92318a3b9daf78ebcdc597085adbf32600d)

int PVGetDecBitrate(VideoDecControls *decCtrl)
{
 VideoDecData *video = (VideoDecData *)decCtrl->videoDecoderData;
 int     idx;
 int32   sum = 0;

 for (idx = 0; idx < BITRATE_AVERAGE_WINDOW; idx++)
 {
        sum += video->nBitsPerVop[idx];
 }
    sum = (sum * video->frameRate) / (10 * BITRATE_AVERAGE_WINDOW);
 return (int) sum;
}

int PVGetDecBitrate(VideoDecControls *decCtrl)
{
 VideoDecData *video = (VideoDecData *)decCtrl->videoDecoderData;
 int     idx;
 int32   sum = 0;

 for (idx = 0; idx < BITRATE_AVERAGE_WINDOW; idx++)
 {
        sum += video->nBitsPerVop[idx];
 }
    sum = (sum * video->frameRate) / (10 * BITRATE_AVERAGE_WINDOW);
 return (int) sum;
}
