COMPMID-505: Move PixelWiseMultiplication to new validation

Change-Id: I4daff53f5ee7f0393451425ba20aee1013466954
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89200
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
19 files changed