COMPMID-897 Merge batch normalization with bounded relu

Change-Id: I9a607fe620f795cdea1a99fdd3f5f8c2fc76f980
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/119234
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/arm_compute/core/Types.h b/arm_compute/core/Types.h
index 5a08ac9..3affe7e 100644
--- a/arm_compute/core/Types.h
+++ b/arm_compute/core/Types.h
@@ -713,6 +713,7 @@
         LINEAR           /**< Linear ( \f$ f(x)= ax + b \f$ ) */
     };
 
+    ActivationLayerInfo() = default;
     /** Default Constructor
      *
      * @param[in] f The activation function to use.
@@ -721,7 +722,7 @@
      * @param[in] b (Optional) The beta parameter used by some activation functions (@ref ActivationFunction::LINEAR, @ref ActivationFunction::LU_BOUNDED_RELU, @ref ActivationFunction::TANH).
      */
     ActivationLayerInfo(ActivationFunction f, float a = 0.0f, float b = 0.0f)
-        : _act(f), _a(a), _b(b)
+        : _act(f), _a(a), _b(b), _enabled(true)
     {
     }
     ActivationFunction activation() const
@@ -736,11 +737,16 @@
     {
         return _b;
     }
+    bool enabled() const
+    {
+        return _enabled;
+    }
 
 private:
-    ActivationFunction _act;
-    float              _a;
-    float              _b;
+    ActivationFunction _act     = { ActivationLayerInfo::ActivationFunction::LOGISTIC };
+    float              _a       = {};
+    float              _b       = {};
+    bool               _enabled = { false };
 };
 
 /** Normalization Layer Information class */