Fix: Can't control Alarm/Ring volume after plugout headset and a2dp

1) wired headset is plugin, a2dp is connected, fm is on =>
2) plugout wired headset, then disconnect a2dp =>
3) will not control alarm/ring volume via +/- button
reason: after plugout wired headset, then disconnect a2dp at last,
configureAudioDataPath(true) will be called and AudioSystem.DEVICE_OUT_FM
will be set to DEVICE_STATE_AVAILABLE. Then we can only control
media volume via +/- button.

Change-Id: Ic9b0bad141a8d5d88e6b9b93350a5b02961b91db
CRs-Fixed: 1047328
diff --git a/fmapp2/src/com/caf/fmradio/FMRadioService.java b/fmapp2/src/com/caf/fmradio/FMRadioService.java
index 9546cd3..2b9fb83 100644
--- a/fmapp2/src/com/caf/fmradio/FMRadioService.java
+++ b/fmapp2/src/com/caf/fmradio/FMRadioService.java
@@ -652,7 +652,8 @@
                             mA2dpDisconnected = false;
                             mA2dpConnected = true;
                         }
-                        configureAudioDataPath(true);
+                        if (isFmOn())
+                            configureAudioDataPath(true);
                     } else if (action.equals("HDMI_CONNECTED")) {
                         //FM should be off when HDMI is connected.
                         fmOff();