support _POSIX_CPUTIME

Bug: 18490039
Change-Id: I01fa83b48e1b908de1f227b6e4f98e280bcd50ee
diff --git a/libc/Android.mk b/libc/Android.mk
index ef1fb9b..13fc297 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -98,6 +98,7 @@
     bionic/chown.cpp \
     bionic/clearenv.cpp \
     bionic/clock.cpp \
+    bionic/clock_getcpuclockid.cpp \
     bionic/clock_nanosleep.cpp \
     bionic/clone.cpp \
     bionic/__cmsg_nxthdr.cpp \