Fix dev_t (for LP64).

32-bit Android's dev_t was wrong too. We can't fix that without ABI breakage,
but we can at least fix 64-bit Android. And add tests.

Bug: https://code.google.com/p/android/issues/detail?id=54966
Change-Id: Ie2e42cc042b78b669a1a44e55f959dbd9c52c5c9
diff --git a/tests/Android.mk b/tests/Android.mk
index 0a4db91..916d0b2 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -66,6 +66,7 @@
     sys_stat_test.cpp \
     sys_syscall_test.cpp \
     sys_time_test.cpp \
+    sys_types_test.cpp \
     system_properties_test.cpp \
     time_test.cpp \
     unistd_test.cpp \