Keep external/fio building now we have <sys/shm.h>. am: dc040aef89 am: a53057c79c am: 628a269c99
am: 6a7d154a0d

Change-Id: Ie976cf7c67c500b2be9b604ca5e4ece2cae448d0
diff --git a/os/os-android.h b/os/os-android.h
index 172ad9a..c002509 100644
--- a/os/os-android.h
+++ b/os/os-android.h
@@ -61,6 +61,8 @@
 #include <linux/shm.h>
 #define SHM_HUGETLB    04000
 
+#define shmid_ds shmid64_ds
+
 #include <stdio.h>
 #include <linux/ashmem.h>
 #include <sys/mman.h>