COMPMID-499: Port Gaussian 3x3 and 5x5 to new validation

Change-Id: Icb82186cb97bd8d6e2c4c63f050ee44e5d753ff7
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/86926
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
19 files changed