clang-error: fix clang-diagnostic-inconsistent-missing-override error

This clang-error is generated when a function overrides a member
function but is not marked 'override'.

Change-Id: I664941c2dff5be93dec1571cc974fae2168925f2
Signed-off-by: Pavithra Barithaya <pavithra.b@ibm.com>
diff --git a/libpldmresponder/test/libpldmresponder_bios_attribute_test.cpp b/libpldmresponder/test/libpldmresponder_bios_attribute_test.cpp
index 305e7be..93b633a 100644
--- a/libpldmresponder/test/libpldmresponder_bios_attribute_test.cpp
+++ b/libpldmresponder/test/libpldmresponder_bios_attribute_test.cpp
@@ -38,7 +38,7 @@
 
     void generateAttributeEntry(
         const std::variant<int64_t, std::string>& /*attributevalue*/,
-        Table& /*attrValueEntry*/)
+        Table& /*attrValueEntry*/) override
     {}
 };