We used to allocate 1.5x buffer size. This leads to memory waste, as
we do not set the CB size via SW methods anymore.
Bug 1686189
Change-Id: I45cbdeadc154f59b65138f99f50a72d97511cb78
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/801865
(cherry picked from commit 791f2fe03d16521206649ab90498443e91e284e2)
Reviewed-on: http://git-master/r/815683