this patch adds support to use v4l2_fh_open() and vb2_fop_release,
which allows to drop driver specific struct bcap_fh, as this is handled
by core.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: NScott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>