tree-wide: change EM's ObjectManager path

EntityManager moves its ObjectManager in commit [1], this patch is to
change accordingly. Please see [1] for why we made that change.

[1] https://gerrit.openbmc.org/c/openbmc/entity-manager/+/57279

Tested: code compiles. Code inspection can show that only ObjectManager
path changed.

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: I770e977a5aa76af8ca79f550dcb5f81fa585a66b
diff --git a/storagehandler.cpp b/storagehandler.cpp
index 34ca0b9..08fdda7 100644
--- a/storagehandler.cpp
+++ b/storagehandler.cpp
@@ -732,8 +732,8 @@
     }
 
     ipmi::ObjectValueTree managedObjects;
-    ec = getManagedObjects(ctx, "xyz.openbmc_project.EntityManager", "/",
-                           managedObjects);
+    ec = getManagedObjects(ctx, "xyz.openbmc_project.EntityManager",
+                           "/xyz/openbmc_project/inventory", managedObjects);
     if (!ec)
     {
         auto connection = managedObjects.find(fruPath);