drm_hwcomposer: Add missing assert.h include am: 15d6a22ad6 am: d0147d2dfa
am: d6324e6759

Change-Id: I518b235ec28d0248486f44df380928cc2a6a2f32
diff --git a/drmeventlistener.cpp b/drmeventlistener.cpp
index 4b8a463..ca9d7fc 100644
--- a/drmeventlistener.cpp
+++ b/drmeventlistener.cpp
@@ -21,6 +21,7 @@
 #include "drmeventlistener.h"
 #include "drmresources.h"
 
+#include <assert.h>
 #include <linux/netlink.h>
 #include <sys/socket.h>