[sun4i_csi] Move driver to using control framework. Change CSI driver.

Signed-off-by: Anatoliy Sokolov <aesok@post.ru>
[sun4i_csi] Remove 'init' operation call from csi0 driver.

Signed-off-by: Anatoliy Sokolov <aesok@post.ru>
[sun4i_csi] Move driver to using control framework. Change ov7670
sub driver.

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