Add missing headers

Most of these were found by breaking every redfish class handler into
its own compile unit:

When that's done, these missing headers become compile errors. We
should just fix them.

In addition, this allows us to enable automatic header checking in
clang-tidy using misc-header-cleaner. Because the compiler can now
"see" all the defines, it no longer tries to remove headers that it
thinks are unused.

[1] https://github.com/openbmc/bmcweb/commit/4fdee9e39e9f03122ee16a6fb251a380681f56ac

Tested: Code compiles.

Change-Id: Ifa27ac4a512362b7ded7cc3068648dc4aea6ad7b
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/redfish-core/src/redfish.cpp b/redfish-core/src/redfish.cpp
index b948ed5..66a43d7 100644
--- a/redfish-core/src/redfish.cpp
+++ b/redfish-core/src/redfish.cpp
@@ -1,5 +1,7 @@
 #include "redfish.hpp"
 
+#include "bmcweb_config.h"
+
 #include "account_service.hpp"
 #include "aggregation_service.hpp"
 #include "app.hpp"
@@ -23,7 +25,6 @@
 #include "metric_report_definition.hpp"
 #include "network_protocol.hpp"
 #include "pcie.hpp"
-#include "pcie_slots.hpp"
 #include "power.hpp"
 #include "power_subsystem.hpp"
 #include "power_supply.hpp"