rt2x00: Convert rt2x00 to use threaded interrupts

Use threaded interrupts for all rt2x00 PCI devices.

This has several generic advantages:
- Reduce the time we spend in hard irq context
- Use non-atmic mac80211 functions for rx/tx

Furthermore implementing broad- and multicast buffering will be
much easier in process context while maintaining low latency and
updating the beacon just before transmission (pre tbtt interrupt)
can also be done in process context.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.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/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 009323e..242d595 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1004,7 +1004,9 @@
 		rt2500usb_toggle_rx(rt2x00dev, state);
 		break;
 	case STATE_RADIO_IRQ_ON:
+	case STATE_RADIO_IRQ_ON_ISR:
 	case STATE_RADIO_IRQ_OFF:
+	case STATE_RADIO_IRQ_OFF_ISR:
 		/* No support, but no error either */
 		break;
 	case STATE_DEEP_SLEEP: