Add posix_fadvise(3).

Bug: 12449798
Change-Id: I07cbf3f670a0d1304b68148325a774f266b5c433
diff --git a/libc/Android.mk b/libc/Android.mk
index 5098171..fd7c54f 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -144,6 +144,7 @@
     bionic/pause.cpp \
     bionic/pipe.cpp \
     bionic/poll.cpp \
+    bionic/posix_fadvise.cpp \
     bionic/posix_fallocate.cpp \
     bionic/posix_timers.cpp \
     bionic/pthread_atfork.cpp \