COMPMID-3829: Create CLGEMMLowpQuantizeDownInt32ScaleByFixedPointKernel and remove padding from related OpenCL kernels

Change-Id: I0b0be8fcccf511c7214e83ba6aa8d0e901bc4f3c
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4146
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/Android.bp b/Android.bp
index 5d9b305..f14eb21 100644
--- a/Android.bp
+++ b/Android.bp
@@ -129,11 +129,9 @@
         "src/core/CL/kernels/CLGEMMLowpMatrixMultiplyReshapedOnlyRHSKernel.cpp",
         "src/core/CL/kernels/CLGEMMLowpOffsetContributionKernel.cpp",
         "src/core/CL/kernels/CLGEMMLowpOffsetContributionOutputStageKernel.cpp",
+        "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ScaleByFixedPointKernel.cpp",
         "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ScaleByFloatKernel.cpp",
         "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ScaleKernel.cpp",
-        "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ToInt16ScaleByFixedPointKernel.cpp",
-        "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ToInt8ScaleByFixedPointKernel.cpp",
-        "src/core/CL/kernels/CLGEMMLowpQuantizeDownInt32ToUint8ScaleByFixedPointKernel.cpp",
         "src/core/CL/kernels/CLGEMMLowpReductionKernel.cpp",
         "src/core/CL/kernels/CLGEMMMatrixMultiplyKernel.cpp",
         "src/core/CL/kernels/CLGEMMMatrixMultiplyNativeKernel.cpp",