Add ThreadBase::processConfigEvents_l()

Change-Id: I6bcdc212a984c52ab98b0b0744943b4ecc1e1542
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 47dd3bd..176314a 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -143,6 +143,7 @@
                 void        sendIoConfigEvent_l(int event, int param = 0);
                 void        sendPrioConfigEvent_l(pid_t pid, pid_t tid, int32_t prio);
                 void        processConfigEvents();
+                void        processConfigEvents_l();
 
                 // see note at declaration of mStandby, mOutDevice and mInDevice
                 bool        standby() const { return mStandby; }