packetizer: h264: update sps nal parsing
packetizer: h264: update sps nal parsing

chroma/scaling/matrix is on HIGH profile SPS
(as in 14496-10:2012)

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc