Decouple CpuDepthwiseConv2dNativeKernel

Resolves COMPMID-4632
Change-Id: I5e2a9f0f7801a2afaa35de871ab29cd7238923fd
Signed-off-by: Dana Zlotnik <dana.zlotnik@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/7115
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/Utils.h b/arm_compute/core/Utils.h
index a279ef3..fd9a0ee 100644
--- a/arm_compute/core/Utils.h
+++ b/arm_compute/core/Utils.h
@@ -1238,6 +1238,9 @@
         case DataType::QSYMM16:
             ret = "qs16";
             break;
+        case DataType::QSYMM8_PER_CHANNEL:
+            ret = "qp8";
+            break;
         default:
             ARM_COMPUTE_ERROR("Unsupported.");
     }