Shrink /dev/shm/aos_shared_mem

We aren't using it for anything more than AOS_LOG, and the rates on that
are significantly down.  Free up some memory.

Change-Id: I37adeb93b36323011c7d2f0b28b49c9e63ba85c4
diff --git a/aos/logging/implementations.cc b/aos/logging/implementations.cc
index 5b324b1..89fc904 100644
--- a/aos/logging/implementations.cc
+++ b/aos/logging/implementations.cc
@@ -250,7 +250,7 @@
 }  // namespace
 
 RawQueue *GetLoggingQueue() {
-  return RawQueue::Fetch("LoggingQueue", sizeof(LogMessage), 1323, 40000);
+  return RawQueue::Fetch("LoggingQueue", sizeof(LogMessage), 1323, 10000);
 }
 
 void RegisterQueueImplementation() {