media: uvcvideo: Simplify uvc_endpoint_max_bpi()

The case USB_SPEED_WIRELESS and the default one were doing the same.

Also, make always use of usb_endpoint_maxp_mult, as it should have a
sane value, even for LOW speed and WIRELESS.
Signed-off-by: NRicardo Ribalda <ribalda@chromium.org>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/usb/uvc/uvc_video.c

@@ -1758,21 +1758,14 @@ static unsigned int uvc_endpoint_max_bpi(struct usb_device *dev,
 					 struct usb_host_endpoint *ep)
 {
 	u16 psize;
-	u16 mult;
 
 	switch (dev->speed) {
 	case USB_SPEED_SUPER:
 	case USB_SPEED_SUPER_PLUS:
 		return le16_to_cpu(ep->ss_ep_comp.wBytesPerInterval);
-	case USB_SPEED_HIGH:
-		psize = usb_endpoint_maxp(&ep->desc);
-		mult = usb_endpoint_maxp_mult(&ep->desc);
-		return psize * mult;
-	case USB_SPEED_WIRELESS:
-		psize = usb_endpoint_maxp(&ep->desc);
-		return psize;
 	default:
 		psize = usb_endpoint_maxp(&ep->desc);
+		psize *= usb_endpoint_maxp_mult(&ep->desc);
 		return psize;
 	}
 }