COMPMID-765 - Fix get_convolution_method in order to return the correct method.

Change-Id: Ia4be053b9f5399fe7e241cebb4292890e957ae54
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/121141
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
2 files changed