[media] SOLO6x10: Fix video frame type (I/P/B)

Mask v4l2_buf.flags to indicate only I/P/B frames.
Signed-off-by: Krzysztof Ha?asa <khalasa@piap.pl>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c

@@ -506,6 +506,7 @@ static int solo_fill_mpeg(struct solo_enc_dev *solo_enc,
 		return -EIO;
 
 	/* If this is a key frame, add extra header */
+	vb->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME);
 	if (!vop_type(vh)) {
 		skip = solo_enc->vop_len;
 		vb->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;