In function av1_xform_quant().

For subset1, high delay mode:
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0565 | -0.0975 |  0.0317 |  -0.0937 | -0.0930 | -0.1261 |    -0.0994

Change-Id: I638c2a4c2ad359709069c1587b677a813fb589c2