libvpx

Move call to vp9_rc_get_second_pass_params().

Call to vp9_rc_get_second_pass_params() moved from
Pass2Encode() to earlier in vp9_get_compressed_data(),
to ensure that two pass stats and parameters are
available before decisions such as frame scaling.

Change-Id: If21537f0073919b04696a7d5e9aac78e23d76f39