Rename isValidSubId to isValidSubscriptionid.

Bug: 18668873
Change-Id: Ie709a62bbb74e0a767daeb9e3fb3aecd4c45df44
diff --git a/src/com/android/bluetooth/hfp/HeadsetPhoneState.java b/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
index 7f8f4e2..8d4e1ee 100644
--- a/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
+++ b/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
@@ -121,7 +121,7 @@
 
             int subId = SubscriptionManager.getDefaultSubId();
 
-            if (SubscriptionManager.isValidSubId(subId)) {
+            if (SubscriptionManager.isValidSubscriptionId(subId)) {
                 mPhoneStateListener = getPhoneStateListener(subId);
 
                 mTelephonyManager.listen(mPhoneStateListener,