Moves libmemtrack header to standard location

Change-Id: If8c80003bc2f042c67ffdf38469407de3c2fda2c
diff --git a/libmemtrack/memtrack_test.c b/libmemtrack/memtrack_test.c
index f306f67..cd94bc5 100644
--- a/libmemtrack/memtrack_test.c
+++ b/libmemtrack/memtrack_test.c
@@ -19,7 +19,7 @@
 #include <string.h>
 #include <sys/types.h>
 
-#include <memtrack.h>
+#include <memtrack/memtrack.h>
 
 #include <pagemap/pagemap.h>