FM: Fix the issue with SEEK frequency update

After SEEk complete frequency is not updating
when the app is not in focus.
After shared preference getting update with
tuned frequency, save it properly.

CRs-Fixed: 685196
Change-Id: I61bbd01135cd67e8163ee6dc888f3cea12a16b90
diff --git a/fmapp2/src/com/caf/fmradio/FMRadioService.java b/fmapp2/src/com/caf/fmradio/FMRadioService.java
index 2e391f4..38f870f 100644
--- a/fmapp2/src/com/caf/fmradio/FMRadioService.java
+++ b/fmapp2/src/com/caf/fmradio/FMRadioService.java
@@ -2748,6 +2748,7 @@
          try
          {
             FmSharedPreferences.setTunedFrequency(frequency);
+            mPrefs.Save();
             //Log.d(LOGTAG, "Call mCallbacks.onSearchComplete");
             /* Since the Tuned Status changed, clear out the RDSData cached */
             if(mReceiver != null) {