[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.cpp b/parameter/Subsystem.cpp
index 5ae04d2..c776065 100644
--- a/parameter/Subsystem.cpp
+++ b/parameter/Subsystem.cpp
@@ -213,7 +213,7 @@
     return pSubsystemObject;
 }
 
-void CSubsystem::findSusbystemLevelMappingKeyValue(
+void CSubsystem::findSubsystemLevelMappingKeyValue(
         const CInstanceConfigurableElement* pInstanceConfigurableElement,
         string& strMappingKey,
         string& strMappingValue) const
@@ -255,7 +255,7 @@
     // Find SubsystemCreator mapping key
     string strMappingKey;
     string strMappingValue; // mapping value where amends are not replaced by their value
-    findSusbystemLevelMappingKeyValue(pInstanceConfigurableElement, strMappingKey, strMappingValue);
+    findSubsystemLevelMappingKeyValue(pInstanceConfigurableElement, strMappingKey, strMappingValue);
 
     // Find SubSystemObject mapping value (with amends replaced by their value)
     return strMappingKey + ":" + pSubsystemObject->getFormattedMappingValue();