beckham: Enable Always-On-Display

* OLED panels should allow this to be enabled.

Change-Id: I248726f3ad1b751d418214ac895975abe59daec7

overlay/frameworks/base/core/res/res/values/config.xml

@@ -24,4 +24,9 @@
 
     <!-- If true, the display will be shifted around in ambient mode. -->
     <bool name="config_enableBurnInProtection">true</bool>
+
+    <!-- Control whether the always on display mode is available. This should only be enabled on
+         devices where the display has be tuned to be power efficient in DOZE and/or DOZE_SUSPEND
+         states. -->
+    <bool name="config_dozeAlwaysOnDisplayAvailable">true</bool>
 </resources>