COMPMID-1040: Added support for nullptr bias tensor in NEWinogradLayer

Change-Id: Ie624ee17c63dede711d913a82819e128954a57c9
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124861
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
10 files changed