usb: gadget: ci: Make various ops const

ci_udc_ops and ci_ep_ops do not change their operations.
Mark them as const.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index 542684c..d9a89a1 100644
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -94,11 +94,11 @@
 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
 
-static struct usb_gadget_ops ci_udc_ops = {
+static const struct usb_gadget_ops ci_udc_ops = {
 	.pullup = ci_pullup,
 };
 
-static struct usb_ep_ops ci_ep_ops = {
+static const struct usb_ep_ops ci_ep_ops = {
 	.enable         = ci_ep_enable,
 	.disable        = ci_ep_disable,
 	.queue          = ci_ep_queue,