Bring tablet icon into XDG compliance

(cherry picked from commit eb1bba9af5)

chalk/ui/kis_dlg_preferences.cc

@@ -740,7 +740,7 @@ PreferencesDialog::PreferencesDialog( TQWidget* parent, const char* name )
     vbox = addVBoxPage( i18n( "Performance"), i18n( "Performance"), BarIcon( "fork", TDEIcon::SizeMedium ));
     m_performanceSettings = new PerformanceTab ( vbox );
 
-    vbox = addVBoxPage ( i18n( "Tablet" ), i18n( "Tablet" ), BarIcon( "tablet", TDEIcon::SizeMedium ));
+    vbox = addVBoxPage ( i18n( "Tablet" ), i18n( "Tablet" ), BarIcon( "input-tablet", TDEIcon::SizeMedium ));
     m_tabletSettings = new TabletSettingsTab( vbox );
 
     vbox = addVBoxPage ( i18n( "Grid" ), i18n( "Grid" ), BarIcon( "grid", TDEIcon::SizeMedium ));