Added ftw64, nftw64

Bug: 13076637
Change-Id: I5b926526f935b00bba14c2807b61d85f95089c33
diff --git a/tests/Android.mk b/tests/Android.mk
index 4879e52..5fafba6 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -44,6 +44,7 @@
     eventfd_test.cpp \
     fcntl_test.cpp \
     fenv_test.cpp \
+    ftw_test.cpp \
     getauxval_test.cpp \
     getcwd_test.cpp \
     inttypes_test.cpp \