Enable kernel selection testing (Phase #1)

Change-Id: I1d65fb9d3a7583cf8d4163ca7c0fbee27dc52633
Signed-off-by: Yair Schwarzbaum <yair.schwarzbaum@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6767
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/support/StringSupport.h b/support/StringSupport.h
index 5e237c7..e8b3ca7 100644
--- a/support/StringSupport.h
+++ b/support/StringSupport.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020 Arm Limited.
+ * Copyright (c) 2017-2022 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -131,6 +131,12 @@
     return stream.str();
 }
 
+// Specialization for const std::string&
+inline std::string to_string(const std::string &value)
+{
+    return value;
+}
+
 /** Convert string values to float.
  *
  * @note This function implements the same behaviour as std::stof. The latter
@@ -164,6 +170,12 @@
     return ::std::to_string(std::forward<T>(value));
 }
 
+// Specialization for const std::string&
+inline std::string to_string(const std::string &value)
+{
+    return value;
+}
+
 /** Convert string values to float.
  *
  * @note This function acts as a convenience wrapper around std::stof. The