wusbcore: add sysfs attribute for DNTS count and interval

This patch adds a sysfs attribute for the wireless USB host controller
device notification transmit slot(DNTS) count and interval.  It also
changes the defaults from 16 slots in every MMC to a more reasonable 4
slots every 2ms.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
index b4a4fa7..a7069f4 100644
--- a/drivers/usb/wusbcore/wusbhc.h
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -252,6 +252,8 @@
 	unsigned trust_timeout;			/* in jiffies */
 	struct wusb_ckhdid chid;
 	uint8_t phy_rate;
+	uint8_t dnts_num_slots;
+	uint8_t dnts_interval;
 	struct wuie_host_info *wuie_host_info;
 
 	struct mutex mutex;			/* locks everything else */