The vpu supports encoder and decoder.
it needs vpu core to handle it.
core will run either encoder or decoder firmware.

This driver is for support the vpu core.
Signed-off-by: NMing Qian <ming.qian@nxp.com>
Signed-off-by: NShijie Qin <shijie.qin@nxp.com>
Signed-off-by: NZhou Peng <eagle.zhou@nxp.com>
Tested-by: NNicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>