IVGCVSW-3140 Fix Hal 1.1 Softmax failures on Android Q

 * Add support for Softmax Axis parameter.

!armnn:1567

Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
Change-Id: I7e47d36f13b122dbad7976c0d59773845bc182b1
diff --git a/1.2/HalPolicy.hpp b/1.2/HalPolicy.hpp
index 18cf035..3c4906c 100644
--- a/1.2/HalPolicy.hpp
+++ b/1.2/HalPolicy.hpp
@@ -48,6 +48,8 @@
                               ConversionData& data,
                               armnn::ResizeMethod resizeMethod);
 
+    static bool ConvertSoftmax(const Operation& operation, const Model& model, ConversionData& data);
+
     static bool ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data);
 };