media: v4l2-ctrls: Fix typo in VP8 comment

The comment for the VP8 loop filter flags uses the partially wrong name
for the flags. Unlike the other VP8 flag names, the loop filter flag names
don't have "_FLAG" in them. Change the comment so that it matches the
actual flag definitions in the header.

Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

include/uapi/linux/v4l2-controls.h

@@ -1736,7 +1736,7 @@ struct v4l2_vp8_segment {
  * @sharpness_level: matches sharpness_level syntax element.
  * @level: matches loop_filter_level syntax element.
  * @padding: padding field. Should be zeroed by applications.
- * @flags: see V4L2_VP8_LF_FLAG_{}.
+ * @flags: see V4L2_VP8_LF_{}.
  *
  * This structure contains loop filter related parameters.
  * See the 'mb_lf_adjustments()' part of the frame header syntax,