vp9 SVC: Fix the denoiser frame buffer management.
Change the denoiser frame buffer management for SVC to more generally handle the layer patterns in SVC (where last is not always refreshed). This change is only for SVC with denoising and is bitexact. Change-Id: Ic2b146a924cdf6e7114609158afa3d4880fe3fae
Showing with 109 additions and 63 deletions