Cherish: Add 2 Button background styles in clear all notifications

Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

res/xml/cherish_settings_theme.xml

@@ -60,7 +60,7 @@
             android:title="@string/clearall_bgstyle_title"
             android:dependency="notification_material_dismiss"
             android:defaultValue="0"
-            android:max="2"   
+            android:max="4"   
             android:min="0" />
 
     </PreferenceCategory>