orinoco: constify usb_device_id

usb_device_id are not supposed to change at runtime. All functions
working with usb_device_id provided by <linux/usb.h> work with
const usb_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/intersil/orinoco/orinoco_usb.c

@@ -210,7 +210,7 @@ struct ezusb_packet {
 } __packed;
 
 /* Table of devices that work or may work with this driver */
-static struct usb_device_id ezusb_table[] = {
+static const struct usb_device_id ezusb_table[] = {
 	{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)},
 	{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)},
 	{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)},