Wifi: DPP STA Enrollee-Responder mode

Added system APIs for DPP STA Enrollee-Responder mode
 - start DPP in Enrollee-Responder mode
 - Callback function to pass Generated DPP bootstrap URI
Defined a new failure code to indicate generate DPP
URI failure.

Bug: 162686712
Test: atest 8BFAZ01446 com.android.server.wifi
Test: act.py -c <dpp config file> -tc WifiDppTest
Change-Id: I094d06dd1f195aa9d647deb65cca91a81cfc10db
diff --git a/framework/api/current.txt b/framework/api/current.txt
index 911f2fb..ce2b8ca 100644
--- a/framework/api/current.txt
+++ b/framework/api/current.txt
@@ -14,6 +14,7 @@
     field public static final int EASY_CONNECT_EVENT_FAILURE_NOT_COMPATIBLE = -3; // 0xfffffffd
     field public static final int EASY_CONNECT_EVENT_FAILURE_NOT_SUPPORTED = -8; // 0xfffffff8
     field public static final int EASY_CONNECT_EVENT_FAILURE_TIMEOUT = -6; // 0xfffffffa
+    field public static final int EASY_CONNECT_EVENT_FAILURE_URI_GENERATION = -13; // 0xfffffff3
   }
 
   public final class ScanResult implements android.os.Parcelable {