[1/2] omni: set custom_lockscreen_shortcuts_enabled=true

this unlocks using custom visibility of keyguard affordance
BUT we need another change in settings to still show old
settings since we dotn have the new ui for setting the
keyguard affordance items

Change-Id: Idb57905568144848377c9d404ca094bff23fb6ee
diff --git a/overlay/common/frameworks/base/packages/SystemUI/res/values/config.xml b/overlay/common/frameworks/base/packages/SystemUI/res/values/config.xml
index 8412e5e..8db5056 100644
--- a/overlay/common/frameworks/base/packages/SystemUI/res/values/config.xml
+++ b/overlay/common/frameworks/base/packages/SystemUI/res/values/config.xml
@@ -58,4 +58,6 @@
         <item>@*android:string/status_bar_volume</item>
         <item>@*android:string/status_bar_call_strength</item>
     </string-array>
+    
+    <bool name="custom_lockscreen_shortcuts_enabled">true</bool>
 </resources>