COMPMID-765 Move direct convolution output stage to the right file

Change-Id: Ifb4d27ba05aa618babb79b1f8e95fbfa689c5f3a
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/120792
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
3 files changed