media: uapi: videodev2: Fix comment for 12-bit packed Bayer formats

For 12-bit packed Bayer formats: every two consecutive samples are
packed into three bytes. Fix the corresponding comment.

Signed-off-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

Author: Mehdi Djait

include/uapi/linux/videodev2.h

@@ -726,7 +726,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12  RGRG.. GBGB.. */
-	/* 12bit raw bayer packed, 6 bytes for every 4 pixels */
+	/* 12bit raw bayer packed, 3 bytes for every 2 pixels */
 #define V4L2_PIX_FMT_SBGGR12P v4l2_fourcc('p', 'B', 'C', 'C')
 #define V4L2_PIX_FMT_SGBRG12P v4l2_fourcc('p', 'G', 'C', 'C')
 #define V4L2_PIX_FMT_SGRBG12P v4l2_fourcc('p', 'g', 'C', 'C')