Fix compile warning

Change-Id: I80de4a013dc65eb7c532561438fd10e005354c03
diff --git a/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index eacecf0..07607e1 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -50,7 +50,7 @@
 static const int kDumpLockRetries = 50;
 static const int kDumpLockSleepUs = 20000;
 
-static const nsecs_t kAudioCommandTimeout = 3000000000; // 3 seconds
+static const nsecs_t kAudioCommandTimeout = 3000000000LL; // 3 seconds
 
 namespace {
     extern struct audio_policy_service_ops aps_ops;