media: replace strncpy() by strscpy()

The strncpy() function is being deprecated upstream. Replace
it by the safer strscpy().

While here, replace a few occurences of strlcpy() that were
recently added to also use strscpy().

Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/usb/go7007/go7007-v4l2.c

@@ -327,7 +327,7 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 	fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	fmt->flags = V4L2_FMT_FLAG_COMPRESSED;
 
-	strncpy(fmt->description, desc, sizeof(fmt->description));
+	strscpy(fmt->description, desc, sizeof(fmt->description));
 
 	return 0;
 }