Merge tag 'u-boot-rockchip-20240207' of https://source.denx.de/u-boot/custodians/u-boot-rockchip

- Add board: rv1126 Sonoff iHost board
- rv1126 ddr4 support;
- Enable BOOTSTD_FULL for RK3399 and RK3588;
- rk3036 spl stack addr fix;
- dts sync from linux v6.8-rc1 for rk356x, rk3588, rv1126;
- Enable eMMC HS200 mode by default for rk3568 and rk3588;