Generate sdbusplus bindings for Associations.

- Generate sdbusplus server bindings for the org.openbmc.Associations
  interface in makefile.
- Add YAML file that describes the org.openbmc.Associations interface.

Change-Id: Ibb83e4828280f0a5383e901b914e40257eb4a7ff
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/activation.hpp b/activation.hpp
index 69f52b7..89269bd 100644
--- a/activation.hpp
+++ b/activation.hpp
@@ -5,6 +5,7 @@
 #include <xyz/openbmc_project/Software/ActivationBlocksTransition/server.hpp>
 #include "xyz/openbmc_project/Software/RedundancyPriority/server.hpp"
 #include "xyz/openbmc_project/Software/ActivationProgress/server.hpp"
+#include "org/openbmc/Associations/server.hpp"
 
 namespace phosphor
 {
@@ -14,7 +15,8 @@
 {
 
 using ActivationInherit = sdbusplus::server::object::object<
-    sdbusplus::xyz::openbmc_project::Software::server::Activation>;
+    sdbusplus::xyz::openbmc_project::Software::server::Activation,
+    sdbusplus::org::openbmc::server::Associations>;
 using ActivationBlocksTransitionInherit = sdbusplus::server::object::object<
  sdbusplus::xyz::openbmc_project::Software::server::ActivationBlocksTransition>;
 using RedundancyPriorityInherit = sdbusplus::server::object::object<