[sun4i_csi] Remove allocation of the struct v4l2_subdev in csi_probe.

Signed-off-by: Anatoliy Sokolov <aesok@post.ru>
[sun4i_csi] Change the ccm_info field in struct ccm_config and
struct csi_dev with mclk field.

Signed-off-by: Anatoliy Sokolov <aesok@post.ru>
[sun4i_csi] Use v4l2_device device don't v4l2_subdev in v4l2_dbg call in
csi device driver.


Signed-off-by: Anatoliy Sokolov <aesok@post.ru>