drm/rockchip: vop2: Merge vop2_cluster/esmart_init function

Now these two function share the same logic, they can
be merged as one.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250218112744.34433-5-andyshrk@163.com