media: v4l2-isp: Rename block_info to block_type_info

media: v4l2-isp: Rename block_info to block_type_info

The v4l2_isp_params_block_info structure contains validation information
that apply to a block -type- and not only to a specific ISP block
implementation.

Clarify this by renaming v4l2_isp_params_block_info in
v4l2_isp_params_block_type_info and update the documentation and the
users of v4l2-isp accordingly.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>