drm/rockchip: vop2: set bg dly and prescan dly at vop2_post_config

[ Upstream commit 075a5b39 ]

We need to setup background delay cycle and prescan
delay cycle when a mode is enable to avoid trigger
POST_BUF_EMPTY irq on rk3588.

Note: RK356x has no such requirement.

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/20231211115815.1785131-1-andyshrk@163.com


Stable-dep-of: 0ca953ac ("drm/rockchip: vop2: Fix the windows switch between different layers")
Signed-off-by: Sasha Levin <sashal@kernel.org>