TK1/TX1 Hardware Color Space Convertion

hello Romary,

  1. video converter(VIC) can do RGBA → YUV420 conversion.
  2. please enable tegrastat and running the sample code in tegra multimedia api to evaluate the performance.
    JetPack/64_TX1/tegra_multimedia_api/samples/07_video_convert/

also, here’s reference about tegrastat: https://devtalk.nvidia.com/default/topic/968941/?comment=4990831