Add process_vm_readv and process_vm_writev.

Bug: http://b/21761353
Change-Id: Ic8ef3f241d62d2a4271fbc783c8af50257bac498
diff --git a/tests/Android.mk b/tests/Android.mk
index 37f7b4f..29e9e1e 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -106,6 +106,7 @@
     sys_sysinfo_test.cpp \
     sys_time_test.cpp \
     sys_types_test.cpp \
+    sys_uio_test.cpp \
     sys_vfs_test.cpp \
     sys_xattr_test.cpp \
     system_properties_test.cpp \