V4L/DVB (6912): Replace vidioc_ to bttv_

Since there are a few vidioc_ functions that were exported, rename those
functions to bttv_ in order to avoid poluting namespace.

The other functions were also renamed, to standardize inside the driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/bt8xx/bttv-vbi.c

@@ -303,7 +303,7 @@ static int try_fmt(struct v4l2_vbi_format *f, const struct bttv_tvnorm *tvnorm,
 	return 0;
 }
 
-int vidioc_try_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
+int bttv_try_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
 {
 	struct bttv_fh *fh = f;
 	struct bttv *btv = fh->btv;
@@ -321,7 +321,7 @@ int vidioc_try_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
 }
 
 
-int vidioc_s_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
+int bttv_s_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
 {
 	struct bttv_fh *fh = f;
 	struct bttv *btv = fh->btv;
@@ -369,7 +369,7 @@ int vidioc_s_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
 }
 
 
-int vidioc_g_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
+int bttv_g_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
 {
 	struct bttv_fh *fh = f;
 	const struct bttv_tvnorm *tvnorm;

drivers/media/video/bt8xx/bttvp.h

@@ -257,9 +257,9 @@ int bttv_overlay_risc(struct bttv *btv, struct bttv_overlay *ov,
 /* ---------------------------------------------------------- */
 /* bttv-vbi.c                                                 */
 
-int vidioc_try_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
-int vidioc_g_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
-int vidioc_s_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
+int bttv_try_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
+int bttv_g_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
+int bttv_s_fmt_vbi(struct file *file, void *fh, struct v4l2_format *f);
 
 extern struct videobuf_queue_ops bttv_vbi_qops;