Bugfix: dbusconfiguration: read correct hysteresis

s/positive/negative

Change-Id: Ib7761abae47404706c69255fc2861d0f58c26369
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/dbus/dbusconfiguration.cpp b/dbus/dbusconfiguration.cpp
index d882ceb..e0c9f3d 100644
--- a/dbus/dbusconfiguration.cpp
+++ b/dbus/dbusconfiguration.cpp
@@ -724,7 +724,7 @@
                 }
                 if (findNegHyst != base.end())
                 {
-                    info.stepwiseInfo.positiveHysteresis = std::visit(
+                    info.stepwiseInfo.negativeHysteresis = std::visit(
                         VariantToDoubleVisitor(), findNegHyst->second);
                 }
                 std::vector<double> readings =