usb: gadget: fsl_udc_core: fix ep valid checks

Clang reports the following warning:
  drivers/usb/gadget/udc/fsl_udc_core.c:1312:10: warning: address of array
  'ep->name' will always evaluate to 'true' [-Wpointer-bool-conversion]
        if (ep->name)
        ~~  ~~~~^~~~

It seems that the authors intention was to check if the ep has been
configured through struct_ep_setup. Check whether struct usb_ep name
pointer has been set instead.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/udc/fsl_udc_core.c

@@ -1305,7 +1305,7 @@ static void udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
 {
 	struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
 
-	if (ep->name)
+	if (ep->ep.name)
 		nuke(ep, -ESHUTDOWN);
 }
 
@@ -1693,7 +1693,7 @@ static void dtd_complete_irq(struct fsl_udc *udc)
 		curr_ep = get_ep_by_pipe(udc, i);
 
 		/* If the ep is configured */
-		if (curr_ep->name == NULL) {
+		if (!curr_ep->ep.name) {
 			WARNING("Invalid EP?");
 			continue;
 		}