Add control ObjectManager

14ed5e995f2a9893e63a6f83318565102ca3fca7 seems to have exposed the fact
that an ObjectManager is required on the /xyz/openbmc_project/control
namespace.  It's not clear why, and we need to get it documented, but
fix the bug.

Tested: Code compiles.  The submitter of this suggestion has tested on
his platform, and it resolves the immediate crash.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I7120e218bc800ae5bebb0a374372d206d97c58d3

src/FanMain.cpp

diff --git a/src/FanMain.cpp b/src/FanMain.cpp
index b94fb45..765a9d0 100644
--- a/src/FanMain.cpp
+++ b/src/FanMain.cpp
@@ -545,6 +545,7 @@
     sdbusplus::asio::object_server objectServer(systemBus, true);
 
     objectServer.add_manager("/xyz/openbmc_project/sensors");
+    objectServer.add_manager("/xyz/openbmc_project/control");
     systemBus->request_name("xyz.openbmc_project.FanSensor");
     boost::container::flat_map<std::string, std::shared_ptr<TachSensor>>
         tachSensors;