PFW: Add resync mechanism if a subsystem needs resync

BZ: 76267

In the case of a hw subsystems reset, it's possible that its
parameter managed by the PFW may not be aligned with the PFW
blackboard.
A re-synchronization mechanism is implemented to ensure that the
subsystem is re-synchronized on the next configurations application.

Change-Id: I032150955d25a7020cf494e69456897b4c157916
Signed-off-by: Guillaume Denneulin <guillaume.denneulin@intel.com>
Reviewed-on: http://android.intel.com:8080/83015
Reviewed-by: Rocard, KevinX <kevinx.rocard@intel.com>
Reviewed-by: Centelles, Sylvain <sylvain.centelles@intel.com>
Tested-by: Dixon, CharlesX <charlesx.dixon@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>
diff --git a/parameter/SubsystemObject.h b/parameter/SubsystemObject.h
index 6cbfd76..9ba7546 100644
--- a/parameter/SubsystemObject.h
+++ b/parameter/SubsystemObject.h
@@ -65,6 +65,10 @@
     // from ISyncer
     virtual bool sync(CParameterBlackboard& parameterBlackboard, bool bBack, string& strError);
 
+    // Default back synchronization
+    void setDefaultValues(CParameterBlackboard& parameterBlackboard) const;
+
+    // Prevent unsupported operators
     CSubsystemObject(const CSubsystemObject&);
 
     // Define affection operator