sw_util: Rename all Firmware to Software wherever possible

Rename to Software so we can reuse it for software inventory. This make
is more consistent to the SoftwareVersion dbus interface that is used.

Change-Id: I97fb10fccf744a6d6d4cba57f970759431bf4744
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/redfish-core/lib/managers.hpp b/redfish-core/lib/managers.hpp
index 0a235e0..7b1d1da 100644
--- a/redfish-core/lib/managers.hpp
+++ b/redfish-core/lib/managers.hpp
@@ -24,7 +24,7 @@
 #include <dbus_utility.hpp>
 #include <query.hpp>
 #include <registries/privilege_registry.hpp>
-#include <utils/fw_utils.hpp>
+#include <utils/sw_utils.hpp>
 #include <utils/systemd_utils.hpp>
 
 #include <cstdint>
@@ -2048,7 +2048,7 @@
         health->isManagersHealth = true;
         health->populate();
 
-        fw_util::populateFirmwareInformation(asyncResp, fw_util::bmcPurpose,
+        sw_util::populateSoftwareInformation(asyncResp, sw_util::bmcPurpose,
                                              "FirmwareVersion", true);
 
         managerGetLastResetTime(asyncResp);