Add Asset and StorageController interface

This makes it so we can populate the storage controller
redfish schema.

Tested: Redfish validator passed

Change-Id: Ie3f5ae7e5abf0e0fd766491ea14939c7498828c7
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/hsbp-manager/include/utils.hpp b/hsbp-manager/include/utils.hpp
index 002b1ed..c333089 100644
--- a/hsbp-manager/include/utils.hpp
+++ b/hsbp-manager/include/utils.hpp
@@ -35,6 +35,9 @@
                  double, int32_t, uint32_t, int16_t, uint16_t, uint8_t, bool>;
 using Association = std::tuple<std::string, std::string, std::string>;
 
+constexpr const char* assetTag =
+    "xyz.openbmc_project.Inventory.Decorator.Asset";
+
 namespace mapper
 {
 constexpr const char* busName = "xyz.openbmc_project.ObjectMapper";