set the default sharpening settings for overlay pipes
i.e, sharpening is enabled and sharpening strength to zero.
CRs-fixed: 328472
(cherry picked from commit ba5235a66a4424746a6d785f83333b3543dc2dd1)
Change-Id: I6e18321e96f74df99ca6c4b63d06bc831f9e81ae