Correct check box visibility in Display / Brightness

The check box for "Automatic brightness" should not be visible in
Brightness screen if the product configuration
config_automatic_brightness_available in config.xml is set to false.

Change-Id: I0d81137723d0eacd97aa88bf08b69e12dd4d73fa
Signed-off-by: Benn Porscke <benn.porscke@stericsson.com>

src/com/android/settings/BrightnessPreference.java

@@ -120,6 +120,7 @@ public class BrightnessPreference extends SeekBarDialogPreference implements
             mCheckBox.setChecked(mAutomaticMode);
             mSeekBar.setEnabled(!mAutomaticMode || USE_SCREEN_AUTO_BRIGHTNESS_ADJUSTMENT);
         } else {
+            mCheckBox.setVisibility(View.GONE);
             mSeekBar.setEnabled(true);
         }
         mSeekBar.setOnSeekBarChangeListener(this);