clang-diagonsotic error: unknown type name 'stateSensorCacheMaps'

The stateSensorCacheMaps was not included anywhere in this
resulting in a clang-diagnostic error.

Change-Id: I87177307a59283f2ab02e9b73dae66ce278a2aea
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
diff --git a/libpldmresponder/platform_state_sensor.hpp b/libpldmresponder/platform_state_sensor.hpp
index d0276e5..20973b9 100644
--- a/libpldmresponder/platform_state_sensor.hpp
+++ b/libpldmresponder/platform_state_sensor.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "common/utils.hpp"
+#include "host-bmc/dbus_to_event_handler.hpp"
 #include "libpldmresponder/pdr.hpp"
 #include "pdr_utils.hpp"
 #include "pldmd/handler.hpp"