media: videobuf2-v4l2: integrate with media requests
This implements the V4L2 part of the request support. The main change is that vb2_qbuf and vb2_prepare_buf now have a new media_device pointer. This required changes to several drivers that did not use the vb2_ioctl_qbuf/prepare_buf helper functions. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Reviewed-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
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