Make toMap() protected

- to match other toMap() declarations
- to make it usable from subclasses

Change-Id: I0dcc1643fc37f3c327cc0fb2fb2dd1eca99f96fb
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>
Reviewed-by: Christian Kandeler <christian.kandeler@nokia.com>

src/plugins/remotelinux/remotelinuxdeployconfiguration.h

@@ -83,12 +83,14 @@ public:
         return 0;
     }
 
+protected:
+    QVariantMap toMap() const;
+
 signals:
     void deviceConfigurationListChanged();
     void currentDeviceConfigurationChanged();
 
 private:
-    QVariantMap toMap() const;
 
     void initialize();
     void setDeviceConfig(LinuxDeviceConfiguration::Id internalId);