Fix _BSD_SOURCE/__USE_BSD.

Bug: 14659579
Change-Id: I80ec9584f054c02d1078828f6bca759c42bc1d4c
diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index a6cc368..d6044ae 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -25,9 +25,11 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
 #ifndef _SYS_STAT_H_
 #define _SYS_STAT_H_
 
+#include <features.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 #include <sys/time.h>