COMPMID-2756: Add support for QASYMM8_SIGNED in CLDeconvolutionLayer

Tests cover for CLGEMMDeconvolution and CLDirectDeconvolution.

Change-Id: I9a26d0adef1d177ffad39a8992a2dc65327f07e5
Signed-off-by: Sheri Zhang <sheri.zhang@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2853
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/cl_kernels/deconvolution_layer.cl b/src/core/CL/cl_kernels/deconvolution_layer.cl
index a9a6ac1..cb1abd1b 100644
--- a/src/core/CL/cl_kernels/deconvolution_layer.cl
+++ b/src/core/CL/cl_kernels/deconvolution_layer.cl
@@ -64,7 +64,7 @@
  * @note The height of the input should be given as a preprocessor argument using -DSRC_HEIGHT=width, e.g., -DSRC_HEIGHT=10
  * @note The output data layout is NHWC if the preprocessor argument NUM_FILTERS is defined, NCHW if NUM_FILTERS is not defined
  *
- * @param[in]  src_ptr                            Pointer to the source image. Supported data types: QASYMM8/F16/F32
+ * @param[in]  src_ptr                            Pointer to the source image. Supported data types: QASYMM8/QASYMM8_SIGNED/F16/F32
  * @param[in]  src_stride_x                       Stride of the source image in X dimension (in bytes)
  * @param[in]  src_step_x                         src_stride_x * number of elements along X processed per workitem(in bytes)
  * @param[in]  src_stride_y                       Stride of the source image in Y dimension (in bytes)