COMPMID-667: Add validation static method to NEON GEMMlowp

Change-Id: I8a470cc1351593ad8eeaf4ec92e04865e83d4f3c
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/96147
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/core/ITensorInfo.h b/arm_compute/core/ITensorInfo.h
index 1bc0a80..4f69442 100644
--- a/arm_compute/core/ITensorInfo.h
+++ b/arm_compute/core/ITensorInfo.h
@@ -201,8 +201,10 @@
     /** Set the flag whether the tensor size can be changed.
      *
      * @param[in] is_resizable Flag that marks the tensor if it can be changed or not.
+     *
+     * @return Reference to this ITensorInfo object
      */
-    virtual void set_is_resizable(bool is_resizable) = 0;
+    virtual ITensorInfo &set_is_resizable(bool is_resizable) = 0;
     /** Valid region of the tensor. All elements in the valid region have defined values, i.e. are not undefined.
      *
      * @return The valid region.