COMPMID-1598 : Fix compilation error in CLDepthwiseConvolutionQS8 kernel

Change-Id: I65eeb0cba2af462c6ef64a536ad263c407d62811
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/149609
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: bsgcomp <bsgcomp@arm.com>
diff --git a/src/core/CL/cl_kernels/depthwise_convolution_quantized.cl b/src/core/CL/cl_kernels/depthwise_convolution_quantized.cl
index b3edc52..7cd4879 100644
--- a/src/core/CL/cl_kernels/depthwise_convolution_quantized.cl
+++ b/src/core/CL/cl_kernels/depthwise_convolution_quantized.cl
@@ -138,7 +138,7 @@
 #if defined(HAS_BIAS)
     Vector biases = CONVERT_TO_VECTOR_STRUCT_NO_STEP(biases);
 
-    int bias_value = *((__global int *)(vector_offset(&biases, channel));
+    int bias_value = *((__global int *)(vector_offset(&biases, channel)));
 #endif //defined(HAS_BIAS)
 
     // Load relevant input and weights data (Accounts depth multiplier when indexing input, OFM = IFM * DEPTH_MULTIPLIER)