support for USB autosuspend in the asix driver

this implements support for USB autosuspend in the asix USB ethernet
driver.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index 6d95cac..61daa09 100644
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -1474,6 +1474,7 @@
 	.suspend =	usbnet_suspend,
 	.resume =	usbnet_resume,
 	.disconnect =	usbnet_disconnect,
+	.supports_autosuspend = 1,
 };
 
 static int __init asix_init(void)