[PFW] Fix typo in the naming of the SubsystemBuilder API

BZ: 124779

There is a typo in the naming of the SubsystemBuilder API,
"Susbystem" is used instead of "Subsystem".

This patch replaces all occurences of "Susbystem" with "Subsystem".

Change-Id: Ic132bdc685013257a138465545b99d001c46535a
Signed-off-by: Frédéric Boisnard <fredericx.boisnard@intel.com>
Reviewed-on: http://android.intel.com:8080/120166
Reviewed-by: Denneulin, Guillaume <guillaume.denneulin@intel.com>
Reviewed-by: De Chivre, Renaud <renaud.de.chivre@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
diff --git a/parameter/Subsystem.h b/parameter/Subsystem.h
index 277ff25..abd6c39 100644
--- a/parameter/Subsystem.h
+++ b/parameter/Subsystem.h
@@ -160,7 +160,7 @@
 
     /**
      * Find the mapping data defined for the CInstanceConfigurableElement given in parameter, that
-     * corresponds to Susbystem level mapping (Susbystem level mapping keys are defined in
+     * corresponds to Subsystem level mapping (Subsystem level mapping keys are defined in
      * CSubsystemObjectCreator classes).
      * The CInstanceConfigurableElement might as well contain local mapping data.
      *
@@ -169,7 +169,7 @@
      * @param[out] strMappingKey Mapping key defined at the Subsystem level
      * @param[out] strMappingValue Mapping value contained in pInstanceConfigurableElement
      */
-    void findSusbystemLevelMappingKeyValue(
+    void findSubsystemLevelMappingKeyValue(
             const CInstanceConfigurableElement* pInstanceConfigurableElement,
             string& strMappingKey,
             string& strMappingValue) const;