drivers, usb, gadget: fix compiler warnings for at91_udc.c

fix warnings:
drivers/usb/gadget/at91_udc.c:1344:12: warning: 'at91rm9200_udc_init' defined but not used [-Wunused-function]
drivers/usb/gadget/at91_udc.c:1379:13: warning: 'at91rm9200_udc_pullup' defined but not used [-Wunused-function]
drivers/usb/gadget/at91_udc.c:1476:12: warning: 'at91sam9263_udc_init' defined but not used [-Wunused-function]

Signed-off-by: Heiko Schocher <hs@denx.de>

drivers/usb/gadget/at91_udc.c

@@ -1341,51 +1341,7 @@ static int at91_stop(struct usb_gadget *gadget)
 
 /*-------------------------------------------------------------------------*/
 
-static int at91rm9200_udc_init(struct at91_udc *udc)
-{
-	struct at91_ep *ep;
-	int ret;
-	int i;
-
-	for (i = 0; i < NUM_ENDPOINTS; i++) {
-		ep = &udc->ep[i];
-
-		switch (i) {
-		case 0:
-		case 3:
-			ep->maxpacket = 8;
-			break;
-		case 1 ... 2:
-			ep->maxpacket = 64;
-			break;
-		case 4 ... 5:
-			ep->maxpacket = 256;
-			break;
-		}
-	}
-
-	ret = gpio_request(udc->board.pullup_pin, "udc_pullup");
-	if (ret) {
-		DBG("D+ pullup is busy\n");
-		return ret;
-	}
-
-	gpio_direction_output(udc->board.pullup_pin,
-			      udc->board.pullup_active_low);
-
-	return 0;
-}
-
-static void at91rm9200_udc_pullup(struct at91_udc *udc, int is_on)
-{
-	int active = !udc->board.pullup_active_low;
-
-	if (is_on)
-		gpio_set_value(udc->board.pullup_pin, active);
-	else
-		gpio_set_value(udc->board.pullup_pin, !active);
-}
-
+#if defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9G20)
 static int at91sam9260_udc_init(struct at91_udc *udc)
 {
 	struct at91_ep *ep;
@@ -1407,7 +1363,6 @@ static int at91sam9260_udc_init(struct at91_udc *udc)
 	return 0;
 }
 
-#if defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9G20)
 static void at91sam9260_udc_pullup(struct at91_udc *udc, int is_on)
 {
 	u32 txvc = at91_udp_read(udc, AT91_UDP_TXVC);
@@ -1473,31 +1428,6 @@ static const struct at91_udc_caps at91sam9261_udc_caps = {
 };
 #endif
 
-static int at91sam9263_udc_init(struct at91_udc *udc)
-{
-	struct at91_ep *ep;
-	int i;
-
-	for (i = 0; i < NUM_ENDPOINTS; i++) {
-		ep = &udc->ep[i];
-
-		switch (i) {
-		case 0:
-		case 1:
-		case 2:
-		case 3:
-			ep->maxpacket = 64;
-			break;
-		case 4:
-		case 5:
-			ep->maxpacket = 256;
-			break;
-		}
-	}
-
-	return 0;
-}
-
 int usb_gadget_handle_interrupts(int index)
 {
 	struct at91_udc *udc = controller;