wext: Create IW_REQUEST_FLAG_COMPAT and set it as needed.

Now low-level WEXT ioctl handlers can do compat handling
when necessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h
index 369d50e..c99a8ee 100644
--- a/include/net/iw_handler.h
+++ b/include/net/iw_handler.h
@@ -256,7 +256,7 @@
 #define EIWCOMMIT	EINPROGRESS
 
 /* Flags available in struct iw_request_info */
-#define IW_REQUEST_FLAG_NONE	0x0000	/* No flag so far */
+#define IW_REQUEST_FLAG_COMPAT	0x0001	/* Compat ioctl call */
 
 /* Type of headers we know about (basically union iwreq_data) */
 #define IW_HEADER_TYPE_NULL	0	/* Not available */