COMPMID-3973: CTS failure in QASYMM8_SIGNED Depthwise and Fully connected when fusing...

COMPMID-3973: CTS failure in QASYMM8_SIGNED Depthwise and Fully connected when fusing Bounded ReLU in Android R GpuAcc

Change-Id: I6cfee002846d0c84de7e0a5f141dfc4807b93b33
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4421
Reviewed-by: TeresaARM <teresa.charlinreyes@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>