COMPMID-765 - Extended GEMM benchmark

Added new benchmarks GEMM in order to evaluate the performance when the
input matrix B has to be reshaped only once

Change-Id: I1c4790213704ce57ea7b28f6f362c56edccd1eb9
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/118910
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele DiGiorgio <michele.digiorgio@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
6 files changed