media: usb: usbtv: remove duplicate & operation

usb_endpoint_maxp() has an inline keyword and searches for bits[10:0]
by & operation with 0x7ff. So, we can remove the duplicate & operation
with 0x7ff.
Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/usbtv/usbtv-core.c

@@ -84,7 +84,7 @@ static int usbtv_probe(struct usb_interface *intf,
 	/* Packet size is split into 11 bits of base size and count of
 	 * extra multiplies of it.*/
 	size = usb_endpoint_maxp(&ep->desc);
-	size = (size & 0x07ff) * usb_endpoint_maxp_mult(&ep->desc);
+	size = size * usb_endpoint_maxp_mult(&ep->desc);
 
 	/* Device structure */
 	usbtv = kzalloc(sizeof(struct usbtv), GFP_KERNEL);