usb: cdns3: Fixes for sparse warnings

Patch fixes the following warnings:
cdns3-gadget.c:1203: sparse: warning: incorrect type
in assignment (different base types)
cdns3-gadget.c:1203: sparse: expected restricted __le32 [usertype] length
cdns3-gadget.c:1203: sparse: got unsigned long
cdns3-gadget.c:1250: sparse: warning: invalid assignment: |=
cdns3-gadget.c:1250: sparse: left side has type restricted __le32
cdns3-gadget.c:1250: sparse: right side has type unsigned long
cdns3-gadget.c:1253: sparse: warning: invalid assignment: |=
cdns3-gadget.c:1253: sparse: left side has type restricted __le32
cdns3-gadget.c:1253: sparse: right side has type unsigned long
cdns3-ep0.c:367: sparse: warning: restricted __le16 degrades to integer
cdns3-ep0.c:792: sparse: warning: symbol 'cdns3_gadget_ep0_ops' was not
declared. Should it be static?

Reported-by: kernel test robot <[e-mail]>
Signed-off-by: Pawel Laszczak <[e-mail]>
Signed-off-by: Peter Chen <[e-mail]>

drivers/usb/cdns3/cdns3-ep0.c

···
 	if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT)
 		return -EINVAL;
 
-	if (!(ctrl->wIndex & ~USB_DIR_IN))
+	if (!(le16_to_cpu(ctrl->wIndex) & ~USB_DIR_IN))
 		return 0;
 
 	index = cdns3_ep_addr_to_index(le16_to_cpu(ctrl->wIndex));
···
 	return 0;
 }
 
-const struct usb_ep_ops cdns3_gadget_ep0_ops = {
+static const struct usb_ep_ops cdns3_gadget_ep0_ops = {
 	.enable = cdns3_gadget_ep0_enable,
 	.disable = cdns3_gadget_ep0_disable,
 	.alloc_request = cdns3_gadget_ep_alloc_request,

drivers/usb/cdns3/cdns3-gadget.c

···
 		td_size = DIV_ROUND_UP(request->length,
 				       priv_ep->endpoint.maxpacket);
 		if (priv_dev->gadget.speed == USB_SPEED_SUPER)
-			trb->length = TRB_TDL_SS_SIZE(td_size);
+			trb->length = cpu_to_le32(TRB_TDL_SS_SIZE(td_size));
 		else
 			control |= TRB_TDL_HS_SIZE(td_size);
 	}
···
 			priv_req->trb->control = cpu_to_le32(control);
 
 		if (sg_supported) {
-			trb->control |= TRB_ISP;
+			trb->control |= cpu_to_le32(TRB_ISP);
 			/* Don't set chain bit for last TRB */
 			if (sg_iter < num_trb - 1)
-				trb->control |= TRB_CHAIN;
+				trb->control |= cpu_to_le32(TRB_CHAIN);
 
 			s = sg_next(s);
 		}