Allow incoming SCO connections even in Dialing state.

Sometimes when we are in the dialing state for long, the remote
ends tries to establish audio which we reject. Then when we try
to establish audio connection, the remote end doesn't behave well.
This was observed with Audi A6.

Dr no: Eastham
Bug: 2268474
diff --git a/src/com/android/phone/BluetoothHandsfree.java b/src/com/android/phone/BluetoothHandsfree.java
index b507808..27e88b6 100644
--- a/src/com/android/phone/BluetoothHandsfree.java
+++ b/src/com/android/phone/BluetoothHandsfree.java
@@ -663,7 +663,7 @@
                 break;
             case DIALING:
                 callsetup = 2;
-                mAudioPossible = false;
+                mAudioPossible = true;
                 // We also need to send a Call started indication
                 // for cases where the 2nd MO was initiated was
                 // from a *BT hands free* and is waiting for a