COMPMID-579: Port Derivative to new validation

Change-Id: Iecbfa3ebab890c778fb475403466d6fb168e9968
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/113357
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/kernels/CLDerivativeKernel.cpp b/src/core/CL/kernels/CLDerivativeKernel.cpp
index 36ba06d..5bfe751 100644
--- a/src/core/CL/kernels/CLDerivativeKernel.cpp
+++ b/src/core/CL/kernels/CLDerivativeKernel.cpp
@@ -96,11 +96,13 @@
     AccessWindowHorizontal output_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_processed_per_iteration);
     if(_run_derivative_x && _run_derivative_y)
     {
-        input_access = AccessWindowRectangle(input->info(), -border_size().left, -border_size().top, num_elems_processed_per_iteration, num_read_rows_per_iteration);
+        // TODO(COMPMID-415) Fix x-access input bug in CL kernel instead of '+2'
+        input_access = AccessWindowRectangle(input->info(), -border_size().left, -border_size().top, num_elems_processed_per_iteration + 2, num_read_rows_per_iteration);
     }
     else if(_run_derivative_x)
     {
-        input_access = AccessWindowHorizontal(input->info(), -border_size().left, num_elems_processed_per_iteration);
+        // TODO(COMPMID-415) Fix x-access input bug in CL kernel instead of '+2'
+        input_access = AccessWindowHorizontal(input->info(), -border_size().left, num_elems_processed_per_iteration + 2);
     }
     else if(_run_derivative_y)
     {