media: dvb_ringbuffer: Fix typo in dvb_ringbuffer_pkt_write() kerneldoc

There is no such error code EVINAL.

Link: https://lore.kernel.org/linux-media/270f5b7f79a24dc1a3e81d94f6f54fc0f08daf56.1639732105.git.geert+renesas@glider.be
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

include/media/dvb_ringbuffer.h

@@ -214,7 +214,7 @@ extern ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
  * @buf: Buffer to write.
  * @len: Length of buffer (currently limited to 65535 bytes max).
  *
- * Return: Number of bytes written, or -EFAULT, -ENOMEM, -EVINAL.
+ * Return: Number of bytes written, or -EFAULT, -ENOMEM, -EINVAL.
  */
 extern ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8 *buf,
 					size_t len);