USB: wusb: add wusb_phy_rate sysfs file to host controllers

Add the wusb_phy_rate sysfs file to Wireless USB host controllers.  This
sets the maximum PHY rate that will be used for all connected devices.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
index 797c245..fd2fd4e 100644
--- a/drivers/usb/wusbcore/wusbhc.h
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -253,6 +253,7 @@
 
 	unsigned trust_timeout;			/* in jiffies */
 	struct wusb_ckhdid chid;
+	uint8_t phy_rate;
 	struct wuie_host_info *wuie_host_info;
 
 	struct mutex mutex;			/* locks everything else */