[media] media: davinci: vpif_capture: use vb2_fop_mmap/poll
[media] media: davinci: vpif_capture: use vb2_fop_mmap/poll

No need to reinvent the wheel. Just use the already existing
functions for that.

Signed-off-by: Lad, Prabhakar <b468bd3711e6074f1f3ca387583c4bfe5a29e9a6@gmail.com>
Signed-off-by: Hans Verkuil <3a513708f73c27e7d36ebc496aa41dad6a3153ea@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <0cae1d1e981e84d16b82ca3d17be8a7f826608d3@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs