PFW: [Klockwork issue] Fix const operator=

BZ: 92744

Klockwork issue.

operator = should not return a const value.

Change-Id: I6525e7969295866b8d3defe1f0d38ad774edb9b9
Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>
Reviewed-on: http://android.intel.com:8080/100072
Reviewed-by: Denneulin, Guillaume <guillaume.denneulin@intel.com>
Reviewed-by: Gonzalve, Sebastien <sebastien.gonzalve@intel.com>
Reviewed-by: Boisnard, FredericX <fredericx.boisnard@intel.com>
Tested-by: Dixon, CharlesX <charlesx.dixon@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
diff --git a/parameter/MappingContext.cpp b/parameter/MappingContext.cpp
index 43d6a6b..dae71ee 100644
--- a/parameter/MappingContext.cpp
+++ b/parameter/MappingContext.cpp
@@ -45,7 +45,7 @@
 }
 
 // Affectation
-const CMappingContext& CMappingContext::operator=(const CMappingContext& right)
+CMappingContext& CMappingContext::operator=(const CMappingContext& right)
 {
     if (&right != this) {