Finalize (?) byte swap/endian stuff

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/os/os-hpux.h b/os/os-hpux.h
index ae3d6f2..43098ad 100644
--- a/os/os-hpux.h
+++ b/os/os-hpux.h
@@ -50,6 +50,8 @@
 #define FIO_BIG_ENDIAN
 #endif
 
+#define FIO_USE_GENERIC_SWAP
+
 #define FIO_OS_HAVE_AIOCB_TYPEDEF
 typedef struct aiocb64 os_aiocb_t;