Add getSipUri() for identification.

Change-Id: Iabffd38ad554c34a34977c833e6699747cbf0f63

telephony/java/com/android/internal/telephony/sip/SipPhone.java

@@ -102,6 +102,10 @@ public class SipPhone extends SipPhoneBase {
         return mProfile.getProfileName();
     }
 
+    public String getSipUri() {
+        return mProfile.getUriString();
+    }
+
     public boolean canTake(Object incomingCall) {
         synchronized (SipPhone.class) {
             if (!(incomingCall instanceof SipAudioCall)) return false;