Rebase VP8 encode middleware due to new libva interface.

BZ: 125303

Add init_qp for VP8 encode in libmix layer;re-construct SPS/PPS data according to
new libva interface;add rendering HRD/RC Param/FrameRate function.

Change-Id: I7eaea105c1be582a665b052e226da47eba4a9dc6
Signed-off-by: Liu Bolun <bolun.liu@intel.com>
Signed-off-by: pingshix <pingx.shi@intel.com>
Signed-off-by: pingshix <pingx.shi@intel.com>
Reviewed-on: http://android.intel.com:8080/122111
Reviewed-by: buildbot <buildbot@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>
3 files changed