Revert "liblog: remove mistakenly added symbols from vndk"

This reverts commit 5f8162b0862cc04fc9d88305c44fde40ae3ea31c.

Reason for revert: Turns out they're being used.

Merged-In: Iad9010190c7a4140b69dc553df5debdd88dcf81a
Change-Id: Iad9010190c7a4140b69dc553df5debdd88dcf81a
diff --git a/libcutils/trace-dev.inc b/libcutils/trace-dev.inc
index fc7a870..e3da77b 100644
--- a/libcutils/trace-dev.inc
+++ b/libcutils/trace-dev.inc
@@ -32,6 +32,7 @@
 #include <cutils/properties.h>
 #include <cutils/trace.h>
 #include <log/log.h>
+#include <log/log_properties.h>
 
 /**
  * Maximum size of a message that can be logged to the trace buffer.