rt2x00: Simplify intf->delayed_flags locking

Instead of protecting delayed_flags with a spinlock use atomic bitops to
make the code more readable.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
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 755b723..b3f77d4 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -347,6 +347,10 @@
 	struct delayed_work watchdog_work;
 };
 
+enum rt2x00_delayed_flags {
+	DELAYED_UPDATE_BEACON,
+};
+
 /*
  * Interface structure
  * Per interface configuration details, this structure
@@ -374,8 +378,7 @@
 	/*
 	 * Actions that needed rescheduling.
 	 */
-	unsigned int delayed_flags;
-#define DELAYED_UPDATE_BEACON		0x00000001
+	unsigned long delayed_flags;
 
 	/*
 	 * Software sequence counter, this is only required