rt2x00: Add support for CTS protection in rt2x00lib

Inform drivers about the changed CTS protection settings.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 9ad3ce4..b32fedf 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -434,6 +434,7 @@
  */
 struct rt2x00lib_erp {
 	int short_preamble;
+	int cts_protection;
 
 	int ack_timeout;
 	int ack_consume_time;