Revert "Adjust the coefficients for scaling on IVB"
Revert "Adjust the coefficients for scaling on IVB"

This reverts commit 63270a6f0b47a079e4db7254aa1ac4bb0889b082.

commit 63270a6 definitely cause the regression of https://bugs.freedesktop.org/show_bug.cgi?id=71772

Signed-off-by: Xiang, Haihao <8d677183e5993577d4fa73a419b76987913292d6@intel.com>

halleyzhao/libva-intel-driver-fdo,halleyzhao/libva-intel-driver-fdo,halleyzhao/libva-intel-driver-fdo,halleyzhao/libva-intel-driver-fdo