Add support for Android

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/memory.c b/memory.c
index b4ee475..4a9dc4a 100644
--- a/memory.c
+++ b/memory.c
@@ -5,7 +5,9 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
+#ifndef FIO_NO_HAVE_SHM_H
 #include <sys/shm.h>
+#endif
 #include <sys/mman.h>
 
 #include "fio.h"