Add AP support for tethering

First phase of the AP support in
UI and framework
Bug: 2421638

Change-Id: I0b6c31be5fe79bd4d33c292464d271b054754e8d

src/com/android/settings/wifi/AccessPoint.java

@@ -49,7 +49,7 @@ class AccessPoint extends Preference {
     private DetailedState mState;
     private ImageView mSignal;
 
-    private static int getSecurity(WifiConfiguration config) {
+    static int getSecurity(WifiConfiguration config) {
         if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
             return SECURITY_PSK;
         }