drm/rockchip: Use vop_win in vop_win_disable instead of vop_win_data

Change the argument to vop_win_disable to vop_win to accomodate future
changes to the function.

Changes in v4:
- Added to the patchset
Changes in v5:
- None

Link to v4: https://patchwork.freedesktop.org/patch/msgid/20190508160920.144739-10-sean@poorly.run

Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190611160844.257498-10-sean@poorly.run