Increased size of log messages since we out-grew them.

Change-Id: I030e5de715b4527cd5a07464c5a55bbd2dc91780
diff --git a/aos/common/logging/sizes.h b/aos/common/logging/sizes.h
index 6a4c7d5..0aae90b 100644
--- a/aos/common/logging/sizes.h
+++ b/aos/common/logging/sizes.h
@@ -3,7 +3,7 @@
 
 // This file exists so C code and context.h can both get at these constants...
 
-#define LOG_MESSAGE_LEN 400
+#define LOG_MESSAGE_LEN 500
 #define LOG_MESSAGE_NAME_LEN 100
 
 #endif  // AOS_COMMON_LOGGING_SIZES_H_