Add VIDIOC_PREPARE_BUF and VIDIOC_CREATE_BUFS ioctl handlers to enable
support for multi-size buffer queue.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>