Add API for BLE_SCAN_ALWAYS_AVAILABLE feature.

Change-Id: I83e966d4db076db367ded71bfb50c39e57568156
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 2647247..eeef2c2 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -5838,6 +5838,14 @@
                 "wifi_scan_always_enabled";
 
        /**
+        * Settings to allow BLE scans to be enabled even when Bluetooth is turned off for
+        * connectivity.
+        * @hide
+        */
+       public static final String BLE_SCAN_ALWAYS_AVAILABLE =
+               "ble_scan_always_enabled";
+
+       /**
         * Used to save the Wifi_ON state prior to tethering.
         * This state will be checked to restore Wifi after
         * the user turns off tethering.