COMPMID-443 Change CLSoftMaxLayerKernel to use 3D tensor and collapse the higer dimension

Change-Id: I730ef45d855113d8baa7d89818441e168ea43c63
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/80573
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
4 files changed