IVGCVSW-3660 Add SQRT to the android-nn-driver

 * Implemented Convert() function for SQRT operator
 * Fixed some typos in HAL 1.2 Policy

Change-Id: I1e0bc7a43622c52f053927248ee1a71cb797145e
Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
diff --git a/1.2/HalPolicy.hpp b/1.2/HalPolicy.hpp
index 4a785d9..5c8a61e 100644
--- a/1.2/HalPolicy.hpp
+++ b/1.2/HalPolicy.hpp
@@ -102,6 +102,8 @@
 
     static bool ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data);
 
+    static bool ConvertSqrt(const Operation& operation, const Model& model, ConversionData& data);
+
     static bool ConvertSqueeze(const Operation& operation, const Model& model, ConversionData& data);
 
     static bool ConvertStridedSlice(const Operation& operation, const Model& model, ConversionData& data);