The VOP on RK3328 needs to run at a higher rate in order to produce a
proper 3840x2160 signal.

Change to use 300MHz for VIO clk and 400MHz for VOP clk, same rates used
by vendor 4.4 kernel.

Fixes: 52e02d37 ("arm64: dts: rockchip: add core dtsi file for RK3328 SoCs")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20240615170417.3134517-2-jonas@kwiboo.seSigned-off-by: Heiko Stuebner <heiko@sntech.de>