Updated trace.h to recognize ATRACE_TAG_BIONIC.

Bug: 15116468
Change-Id: If8d4971505ffe5cbc193c6ad71618a5adb8192b6
diff --git a/include/cutils/trace.h b/include/cutils/trace.h
index dbd5e25..62a4e9f 100644
--- a/include/cutils/trace.h
+++ b/include/cutils/trace.h
@@ -68,7 +68,8 @@
 #define ATRACE_TAG_RESOURCES        (1<<13)
 #define ATRACE_TAG_DALVIK           (1<<14)
 #define ATRACE_TAG_RS               (1<<15)
-#define ATRACE_TAG_LAST             ATRACE_TAG_RS
+#define ATRACE_TAG_BIONIC           (1<<16)
+#define ATRACE_TAG_LAST             ATRACE_TAG_BIONIC
 
 // Reserved for initialization.
 #define ATRACE_TAG_NOT_READY        (1LL<<63)