Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

src/com/android/settings/widget/RadioButtonPreference.java

@@ -22,12 +22,12 @@ import android.util.AttributeSet;
 import android.view.View;
 import android.widget.TextView;
 
-import com.android.settings.R;
-
 import androidx.core.content.res.TypedArrayUtils;
 import androidx.preference.CheckBoxPreference;
 import androidx.preference.PreferenceViewHolder;
 
+import com.android.settings.R;
+
 /**
  * Check box preference with check box replaced by radio button.
  *