Documentation only, no functional change

Added copyrights and comments within headers

Change-Id: Iebb17ba34b82a6c80718ad32338105a5245e640c
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/src/actions.hpp b/src/actions.hpp
index e1f53ad..e5269d1 100644
--- a/src/actions.hpp
+++ b/src/actions.hpp
@@ -13,6 +13,14 @@
 
 using namespace phosphor::logging;
 
+/**
+ * @brief An action to log an error with the given message
+ *
+ * @param[in] msg - The message to log
+ *
+ * @return Lambda function
+ *     A lambda function to perform the log_error function
+ */
 inline auto log_error(const char* msg)
 {
     return [=](auto&, auto&)